How many watts can a 1990 fourtrax 300 atv battery handle


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Honda FourTrax 300 4x4 Specs and Review

Disclosure: We may get commissions for purchases made through links in this post.

One of Honda’s top ATVs of all time, the Honda FourTrax 300, aimed to provide consumers with a tough quad suitable for recreation and work. Its 4×4 model featured a limited-slip front differential, a double-wishbone front suspension, and a heavy-duty steel frame.

The Honda FourTrax 300 goes down in history as Honda’s best-selling ATV. Its revolutionary design made it a huge success, selling over half a million units over its 12-year production run. The 300 and 300 4×4 sported a more compact chassis and introduced four-wheel drive to the market.

Learn all about this legendary all-terrain vehicle, as you read about its specs and features, and more, in this article.

About Honda FourTrax 300 4×4

The Honda FourTrax 300 4×4 (or TRX300FW) is a ground-breaking high-performance ATV produced by Honda from 1988 to 2000. It featured a 282-cc air-cooled four-stroke mono-cylinder engine and boasted remarkable towing capabilities, 45 mph top speed, and 20 horsepower. It superseded the TRX250X – a 246-cc sport model featuring a five-speed transmission and adjustable suspension that made the FourTrax name famous in 1986.

Known to Honda as its highest-grossing utility vehicle, the FourTrax came in two versions:

  • The standard 2WD Honda FourTrax 300
  • The 4WD Honda FourTrax 300 4×4

With a market that was seeing more value in ATVs and the benefit they bring to utility work and recreation, the Honda FourTrax 300 immediately became a hit with the off-roading community as well as the general public.

FourTrax 300 owners attest to its durability – never letting them down when traversing on sandy wastes and rough terrain or even when riding at an elevation of up to 10,000 feet. Its stock jetting performs excellently under these conditions, provided the spark plug and valves are correctly adjusted.

People love its phenomenal gas mileage – allowing them to cover 25 miles of distance with only the 0.7-gallon reserve. Its front independent wishbones and its 4×4 performance are also impressive, considering the vehicle has low ground clearance.

Honda FourTrax 300 Specs & Features

  • Engine – A four-stroke, air-cooled SOHC engine powers the 300. It has a bore-stroke ratio of 74 mm by 65.5 mm. The engine displacement is 281.7 cubic centimeters delivered by a piston-valve carburetor, and its compression ratio is 9.0:1. Fuel tank capacity is 3.3 US gallons/12.5 liters, with a reserve of 0.7 US gallons/2.5 liters – unleaded gasoline with a pump Octane number of 86+ or a research Octane number of 91+ is highly recommended. Stay away from gasoline with more than 10% ethanol or 5% methanol. Fluid capacity is 2.6 quarts/2.5 liters – use Honda 4-stroke oil or equivalent with a viscosity of SAE 10W-40 (other viscosities from 5W- to 20W-50 may be used depending on the ambient temperature.
  • Drivetrain – The Honda 300 FourTrax sends power to the ground via a five-speed transmission inclusive of a reverse gear and the extra-low first gear. It features an automatic clutch and a maintenance-free shaft drive. Its gear-driven counter-balancer provides smooth and manageable power delivery, and the snorkel-type air intake allows for light mudding and riding on wet terrain.
  • Ignition – It has a solid-state digital ignition with electronic advance and a back-up kick-starter hidden under the right-side panel. The FourTrax 300’s battery, electrical system, and airbox are located under the seat.
  • Tires – Stock front wheels are equipped with AT 504 Ohtsu AT23 X 8-11 Honda FourTrax 300 tires, while the rear wheels with PA 501 Ohtsu AT25 X 12-9 tires. The recommended tire pressure is 2.9 psi. The least pressure allowed when airing down tires is 2.5 psi; maximum pressure during summer is 3.3 psi. The minimum tread depth requiring replacement is 4 mm/0.16 inches. The vehicle wheelbase is 48.8 inches.
  • Brakes – It uses dual-sealed hydraulic drum front brakes and a single-sealed mechanical drum for the rear. The quad’s underside is protected with dual skid plates.
  • Suspension – The front suspension uses an independent double-wishbone with 5.1 inches of travel. The rear suspension utilizes a swingarm setup with 5.1 inches of travel – sporting a limited-slip front differential. Both front and rear suspensions are equipped with Arvin shock absorbers – perfect for trail riding. The quad also has a 5° caster angle and 25 mm/0.98 inches trail length (later changed to 7° caster angle and 33 mm/1.26 inches trail length for the 1996 Honda FourTrax 300).
  • Dimensions – The length is 75 inches, and the width is 43.9 inches. Its height from the ground is 41.5 inches with a ground clearance of 6.3 inches and a turning radius of 8.2 ft. Dry weight is 439 lbs/199 Kg for the standard trim and 474 lbs/215 Kg for the Honda FourTrax 300 4×4; Succeeding model years increased slightly in dry weight, width, and height.
  • Exterior – It uses a steel frame and plastic body material (the quad came in red, olive, and beige) that is tough and easy to clean. It also comes with footpegs with a height of 12.4 inches. 
  • Capacities – It has a trailer towing capacity of 850 lbs/385.6 Kg, a front rack capacity of 66 lbs/29.9 Kg, and a rear rack capacity of 132 lbs/59.9 Kg. You can equip it with fender flare extenders, steel foot baskets, and a recovery winch like WARN 92000 Vehicle Mounted 2000 Series 12V DC Electric Utility Winch with Steel Cable (view on Amazon).
  • Lighting – Two 25-watt lights mounted on the front fenders and a 25-watt handlebar light provide superior light distribution. The quad also has a 5-watt taillight. All other light indicators – neutral, reverse, and oil – are 1.7 watts each. A 12V battery powers all lighting.

Known Issues & Remedies

Although the Honda FourTrax 300 is a durable quad, it does have issues reported by its owners. Luckily, their experience provides us with solutions to these identified problems. Here are a few of them:

Deterioration

Especially for secondhand quads that have seen too many mud bogs and streams, deterioration is unavoidable. To limit corrosion caused by water entering your quad’s brake drums, for instance, grease your O-ring and seals and exercise some restraint. A good practice is to avoid water crossings that go above your brakes.

Drivetrain Issues

Slow acceleration and reduced top speed are a couple of tell-tale signs you have this problem. These may happen even if your wheeler starts fine. You may also notice that only your rear wheels are powered when attempting to take your quad out of the mud. Here are things you can do fix the problem: 

  1. Trim off the bulged end of the wire.
  2. Replace the spark plug cap.
  3. Check and adjust the valve lash to spec.
  4. Clean your carburetor, drain, and flush the gas tank.
  5. Polish all jets in and out.

Following these steps will eliminate the issue and dramatically improve your vehicle’s performance. However, they may not always solve your front-slipping problems. You will need your owner’s manual to guide you on adjusting your clutch. At most, the latter may require you to do a partial or complete clutch kit installation – new pressure plates and all.

In addition to installing a new spark plug, adding sea foam to your fuel will clean your fuel system and free your combustion chamber of excessive carbon deposits that rob the engine of power (which explains the sluggish performance and acceleration). Changing the engine oil and oil filter with manufacturer-recommended options does wonders for your vehicle. Also, nothing beats manually cleaning jets with a #0000 steel wool (if you’re patient enough).

Intermittent Shifting

This typically occurs with older FourTrax 300s when upshifting or downshifting. Several possibilities behind this problem include a broken or warped clutch plate, incorrect oil grade, clutch basket wear, improper clutch adjustment, plus a few more unusual causes. Surprisingly, changing the oil to a JASO rating of MA or higher mitigates clutch wear and eliminates the need to ram your shift lever into the next gear.

Weak Axle and Bearings

Savvy enthusiasts and mechanics doing rebuilds advise new owners to check on Honda 300 FourTrax rear end axle, differential bearings, and swingarm bearings. They are the weakest link on the vehicle. Not catching this problem early on will result in damage to the ring and pinion bearings.

To inspect, move the axle while looking at the areas where it comes through the differential and where it exits the brake drum cover. Replace the bearings at once if you see any movement or play (unless you prefer replacing the pinion bearings, which is more difficult).

Cost of a Honda FourTrax 300

The original price of a 1988 model was $4,399, increasing only by $800 for its last production year. Nowadays, the price could range anywhere from $265 to $3,545, depending on the year and modifications. 1996-2000 models cost at least $3,000. If you’re looking for cheaper, go for used models produced before 1990, which should be around $1,900.

Used FourTrax 300s are mostly available through online and farm auctions. They would typically be models from 1988 to 1996 and would be reasonably priced (only going up to $2,300).

Cheaper, older models may come with minor defects such as torn seats and corroded plastics and may require some rear end work. However, some 1988 models still have stock tires, with no cracks or dents, and have never been taken off-road. Sellers may even throw in their service manual for the new owner.

About Honda

Honda Motor Company Ltd. is a world leader in automotive, AI, robotics, and energy solutions, and is the maker of the Honda FourTrax 300. Founded in 1946 by Soichiro Honda, the Japanese firm began by developing small two-cycle motorcycle engines.

The company innovates in other areas like personal mobility, therapeutic machinery, and even hydrogen-powered vehicles. It continues to be the world’s largest motorcycle manufacturer since 1959 and currently leads the market in commuter and dynamic sports motorcycle production.

Conclusion – Honda FourTrax 300

After two decades from its final production, the quad is still making noise in the ATV market. It continues to be a favorite among off-roaders and rebuilders and retains its value well, especially in near-stock condition. Even compared to the fit and finish of more recent four-wheelers, there is no comparison to the quality and endurance of the best-selling Honda FourTrax 300 4×4.

Battery capacity calculation

When calculating an autonomous power supply system, it is very important to choose the right battery capacity (battery).

For preliminary calculation, you can be guided by the following simple rules.

The capacity that the battery must produce is calculated based on the amount of electricity in Wh consumed from the battery in discharge mode.

Let's say the capacity of 1 battery is 100 Ah, and the voltage is 12 V. Accordingly, the total capacity will be 100 Ah * 12 V = 1200 W * h. The trouble is that if you discharge such a battery by 100%, it will fail. Therefore, you need to leave 30% of the capacity. Corresponding to 100AH ​​* 12V * 0. 7=840 W*h

If there are several batteries, then the amount of energy in them is added up.

in general, the following parameters should be followed: the allowable depth of discharge should not exceed 30-40% for sealed maintenance-free batteries, and not more than 50% for starter batteries. For cyclic battery operation, gel batteries or special batteries with liquid electrolyte should be used. In the buffer mode of operation (i.e. if most of the time the batteries are in a charged state and sometimes, when the mains fails, they give off their energy), AGM batteries can be used. Keep in mind that the degree of charge of the battery does not strictly depend on its voltage. With rapid discharge with high currents, a lower final battery voltage is allowed (up to 9.8V), and if the battery is discharged with a low current for a long time, then it can be discharged by 100% even if the voltage on it is more than 11.5V.

battery capacity decreases with decreasing temperature Gel batteries lose less capacity with decreasing temperature, AGM and starter batteries usually have a capacity 2 times lower than the nominal one already at 0 ° C and with a further decrease in temperature, their useful capacity drops sharply.

battery life decreases as the ambient temperature rises above 25 °C.

Sometimes, information about the voltage to which the battery sags when discharged with different currents is indicated by the manufacturer in the passport for the battery.

Suppose that we need to ensure the operation of a device with a power of 2000 W for 5 hours - i.e. its consumption will be 10000Wh. and for this we want to use batteries with an operating voltage of 12V and a capacity of 100 Ah.

Let's calculate how many of these batteries we need.

The amount of stored energy in a charged battery will be:

P=RxV=100Ahx12V=1200 Wh

This amount of energy can be obtained by fully discharging a fully charged battery. However, batteries may not be fully charged. In addition, a deep full discharge after a small number of charge-discharge cycles will quickly disable batteries. For example, a normal good battery, when discharged to 30% of its capacity and then immediately charged after discharge, is able to withstand 1000 such cycles. If 70% of the capacity is taken away during the discharge, then the number of cycles will decrease to approximately 200. Therefore, when calculating, you need to enter a coefficient that takes into account the depth of discharge.

The extracted amount of energy in the battery is

P=RxVxk

P=100Ahx12Vx0.7

Accordingly, to determine the capacity, you need to divide the amount of energy consumed by the battery voltage multiplied by the capacity factor.

Then the formula for determining the required capacity will look like this:

E=Q / (V x k)

Where E is the required total battery capacity in Ah;

Q is the amount of energy that needs to be received from the batteries in Wh;

V is the voltage of each of the batteries;

k-capacity utilization factor, which takes into account what part of the energy of all used batteries can actually be used by consumers.

Having dealt with the theory, you can determine the required battery capacity according to the specified parameters.

In order to determine what capacity can be taken from the batteries in order to obtain electrical energy in the amount of 10,000 watts. h, divide this amount of energy by the operating voltage of each battery equal to 12V. As a result, we get that it is necessary to select 833 Ah from the available battery capacity. If we apply a capacity factor equal to 0.7, taking into account the fact that it is unacceptable to often completely discharge acid batteries, then we get the value of the required installed battery capacity equal to 1190 Ah

E=10000Wh/(12Vx07)=1190Ah

Since in our example we wanted to use a 100 Ah battery, in this case 12 batteries of this capacity will be needed.

← Which battery to choose gel or AGM? Advantages and disadvantages |

Traction batteries for electric quad bikes, tricycles, strollers.

Gel traction batteries for adult electric ATVs, tricycles - rickshaws, self-propelled wheelchairs. DZM series for 12 - 60 volts. Warehouse Vavilov 9BUT

Don't be in a rush to swap lead acid quad bike batteries for super modern lithium batteries. If this is really important for electric bikes, where it is important to win in battery weight, then for heavy quadrics, cargo and passenger tricycles, weight does not play the first role. In addition, changing the type of battery entails changing the charger. Still inexpensive models for seasonal use in our band are produced complete with lead-acid gel batteries. The Pb resource is of course not so large, only 350-400 cycles, but if you use it only in the summer months, then it turns out 90 days a year - 3-4 years. Lithium batteries also cannot boast of long service life with 1000 charge-discharge cycles, the service life is up to 5-6 years. And this is subject to all the rules of operation.
For professional use, when an electric tricycle or cart works around the clock and all year round, a lithium battery, for all its high cost, will quickly pay for itself.

Depending on the supply voltage of the electric motor , there are 2, 3 or 4 12 volt batteries in the battery boxes. Respectively 24v/36v/48v. Capacity 12 Ah. They are connected in series, so the total voltage is a multiple of the number of batteries, the capacity is equal to the capacity of one battery.

There are two types of wire terminals. Available for M4 bolt and F2 "6.3 mm knife" type terminals. For powerful electric ATVs, a bolt terminal is preferable, because. allows more current to flow through it without heating. Terminal conversion is possible, our store has everything you need for this. But if there is a battery available for the terminal you need - why redo it. Another case is if the old wires are oxidized - this leads to a strong heating of the battery-wire contact, and a new battery may fail. When charging, poor contact leads to a situation where the charger stops charging sooner than it should, and the batteries are constantly in a state of undercharging.

Pb batteries for ATVs, scooters and scooters :


Container designation confusion. Designated capacity according to versions C5, C10, C20. This is the standard. On battery cases - whoever wants, he means so. Therefore, for comparison, it is necessary to take the capacity of one version from the description of the batteries and compare. For example, RDrive EV12-16 has a capacity of 16 Ah according to version C20.

battery 12-15ah dimension: 151*98*100mm. Lead-acid without liquid electrolyte.

  • 4 250 ₽

  • 3 707 ₽

  • 3 910 ₽

  • 4 970 ₽

Correspondence table and number of batteries for tricycle models:

  • Adjutant 350W 48V electric tricycle powered by 4 pcs 6-DZF-12
  • Electric tricycle Elbike Adjutant A1 SLA powered by 4 pcs 6-DZF-12 or 6-DZF-20
  • Electric tricycle ELTRECO S2 L1 powered by 4 pcs 6-DZF-20
  • Electric tricycle E-trike TRANSFORMER powered by 4 pcs 6-DZF-20/22
  • Electric tricycle GreenCamel Tender 1 1000W powered by 60v (5 pcs of batteries) with a capacity of 20 to 100 Ah.
  • Electric scooter E-trike Tristar Cabine from 4 pcs 6-DZF-20
  • Trike Passenger electric scooter from 4 pcs 6-DZF-20
  • Rutrike electric scooter Cartridge from 5 pcs 6-EVF-32

Which battery should I buy? For completeness, the table shows three types of batteries:

  • AGM - has a better energy efficiency, the machine will be more dynamic, especially on hills and when driving over rough terrain. But the service life is less than 200-260 cycles. These are the BB Battery HR 15-12 models and the RDrive 6 DZM 12 battery.
  • GEL - for moderate and long driving on flat surfaces or lawn grass, service life 350-400 cycles. Models 6-DZM-12.
  • GEL Graphene is the golden mean between the first and second, but with a good service life of 400-450 cycles. Models 6-DZM-13 BG.

Please note: AGM or GEL technology batteries are maintenance-free, do not emit harmful gases, and are not spilled. These technologies are very similar and are often confused; for traction purposes, it is customary to use GEL batteries.


battery 20-22ah dimension: 181*76*165mm.

  • 6 800 ₽

  • 6 480 ₽

  • 6 248 ₽

  • 7 933 ₽


Batteries for electric tricycles and sidecars:

Passenger and cargo tricycles are powered by more powerful electric motors than ATVs. For a good power reserve, high-capacity batteries are needed. The total voltage of the battery assembly is 48 or 60 volts. These are 4 or 6 batteries connected in series. Because especially good acceleration dynamics and other sporting properties on tricycles, especially trucks, are usually not required, then the choice of gel technology is 100% justified. The marking of such batteries usually indicates voltage and capacity. 6 EVF 45 defines 6 - these are 6 cans inside a monoblock of 2 volts, a total of 12 volts. 45 - capacity for C5. Please do not confuse with C20 capacity. In the world of traction batteries, it is customary to compare batteries according to version C5 or C3.

38-100 Ah EVF battery

  • 11 560 ₽

  • 16 990 ₽

  • 12 160 ₽

  • 10 880 ₽

You can see the full list of batteries in the catalog gel traction batteries.


Battery life depends on a correct charge.

The charger must match the type of batteries being charged. So-called "fully automatic" or "supposedly universal" chargers also automatically reduce battery life. The passport of the charger must indicate what type of battery it is intended for, as well as the voltage and charge currents. Compare this with the data below:

  • For a 24 volt battery pack, the GEL battery charge voltage is 28.2 - 28.8 volts. Gel - does not tolerate overcharging, gases cannot easily leave the case or quickly recombine, heating, deformation and rupture of the battery case occur.
  • For a 36 volt battery pack, the GEL battery charge voltage is 42.3 - 43.2 volts.
  • For a 48 volt battery pack, the GEL battery charge voltage is 56.4 - 57.6 volts.
  • The maximum charge current must be limited to 20% of the battery capacity. Those. a 20Ah battery must be charged with a current of no more than 4 AMPS.
  • It is unacceptable to charge each battery separately, and then collect them again in a group. It is very difficult to charge each battery in exactly the same way, a different degree of charge will lead to uneven wear. When connected in series, the capacity is determined by the weakest battery in the circuit.
  • Battery charge time. The arithmetic is simple: The same 20Ah battery will go from a discharged state to a charged state when charged with 2 amperes in 10 hours. And given the fact that the charger reduces the current as it charges, then more than 10 hours. If you use equipment intensively, make sure that the charge is full, otherwise a decrease in service life is inevitable!
  • If you rarely use the ATV, as well as during seasonal storage, charge at least once every two months with a small current, the charge duration is 1-2 hours maximum. This will extend the service life.
  • Brief operating instructions for batteries in electric drives.
  • The new battery is 80-90% charged, therefore, before starting operation, recharge with the charger for 1-2 hours, until the indication “charged”.
  • It is NOT NECESSARY to fully discharge the battery and then charge it! (lose one cycle) .
  • DO NOT solder wires to the terminals! Overheating destroys the tire and plates.

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