How to fix a dead atv battery

How to Restore ATV Batteries

If you leave your ATV to hibernate over the winter or to languish unused for months on end, you might have some issues getting your ATV to rouse from its long slumber. In this guide, we'll learn why this happens and what to do to restore your ATV battery.

Why do ATV batteries break down?

ATV batteries that are left to discharge completely often won’t take a charge, and even if they do, they’ll not have as long a lifespan as they used to have. Extreme heat and cold are also hazardous to your battery’s well-being.

Whether you ride in extreme cold or heat, you can meet a variety of harmful factors for your health as well. Regulate your comfort with proper thermal underwear.

The way to avoid your battery’s slow death is through the use of a smart charger or trickle charger. Both of these types of charger can be set to monitor your ATV battery and keep it at full charge while you’re not using it for an extended period. This keeps the battery from discharging and maintains its health.

But what if your ATV battery dies completely? Is it possible to restore dead ATV batteries that have been completely discharged? In most cases, yes, you can use a multi-mode smart charger to bring your ATV battery back from the dead.

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Restoring an ATV battery with a standard charger

Let’s say you own a battery charger that you’ve used to charge your ATV battery in the past but this time it isn’t working. This is often because the ATV battery has been completely discharged so the charger doesn’t recognize the battery is connected at all.

It is possible to trick the charger into starting its charging process on your dead battery. Your charger should be capable of outputting amps as low as 1-3, depending on your ATV battery’s specifications. Using a charger that can only output at 10A like a dedicated car charger can cause an ATV battery to overheat.

For this trick, you’ll need another charged battery and a set of jumper cables.

1. Connect up the two batteries with a jumper cable, bridging their positive terminals.

2. Connect another jumper cable to the negative terminal of the good battery and attach the other end to ground or the dead battery’s negative terminal.

3. Start up the charger.

4. Once the charging process has begun, disconnect the cable from the good battery’s positive terminal.

5. Disconnect the cable from the dead battery’s negative terminal.

6. Disconnect the cable from the good battery’s negative terminal.

7. Wait for your dead battery to fully charge and test it out.

Restoring an ATV battery with a smart charger

Many smart chargers will detect when the voltage is too low to perform a standard charge. A secondary Soft-Start mode will be used in an attempt to recover the battery.

If the Soft-Start mode is successful, the smart charger will switch to a Constant Current mode and begin charging the ATV battery as normal. If the Soft-Start mode isn’t successful, an error message will show and you’ll need to replace the battery.

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Restoring an ATV battery with a desulfating battery charger

A chief cause of the early failure of ATV batteries is sulfation. Sulfation is a build-up of lead sulfate crystals that happens over a battery’s lifetime. Every time you charge or discharge a battery, sulfate forms. Overcharge, undercharge, or leave your battery to discharge for several days, and sulfate will form much more quickly.

Smart battery chargers with a desulfating feature work to break down these crystals in the battery plates. They do this by sending a range of high-frequency electronic pulses through the battery that dissolves sulfate quickly.

Desulfating battery chargers either have a specific desulfation mode to recondition a battery or simply perform desulfation during every stage of the charging process. Smart battery charger manufacturers delineate the various stages of the charging process in different ways, but you can typically expect:

1. An Initialization Mode, where the smart charger diagnoses the state the battery is in,

2. A Bulk Charge Mode, where battery voltage is applied at a constant rate until it reaches a predetermined level,

3. An Absorption Charge Mode, where the battery voltage is kept constant while the charge current amplitude drops,

4. And a Maintenance Charge Mode, where the battery is kept at a voltage slightly higher than if the battery were fully charged.

Having charged the desulfated battery completely, the battery will offer better performance and lifetime now that the desulfation has been reduced.



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3 Ways To Revive A Dead ATV Battery | VARTA® Automotive Batteries

Charging Instructions for Motorcycle Battery How do I jump-start my vehicle? 3 Ways To Revive A Dead ATV Battery

← Charging

Having your ATV battery not turn over can be a really terrible time. At home, you can charge it using your battery charger, but if you are out on a trail or at a campsite, it can be scary when it won't start. But all is not lost. There are a few ways you can get your ATV battery going again.

Compression Start an ATV Battery

The Compression Start is where you basically trick the ATV into starting. What happens is you get the wheels moving, and that can trick the engine into rolling over. Once it is on, it will charge the Battery as you drive.

Turn on the key or switch and put your ATV into first gear. Sometimes, if you cannot get it rolling fast enough, you may need to put it into second gear. Pull the clutch up and get the ATV rolling to 10 MPH. Then let out the clutch and add gas as your hear the engine try to turn. This should make the engine fire. Make sure to pull in the clutch once it's started to make sure you don't crash

ATV Jump Start

This is a really useful way to jump start your ATV as you will usually be cruising with at least one other ATV. This is a fairly simple way to get your ATV running, it's merely jumping it like when you jump a car.

Connect the cables to the good battery first, then connect the bad Battery. When you connect the black wire, or the ground Wire, it is usually better to just attach it to the frame as there is not a lot of room on the battery. Just make sure it is grounded. Start the good battery first and let it idle for a few minutes. Then try starting the bad battery. Once it starts, remove the red wire first, then the black from the newly started ATV, repeat for the other. Let this ATV idle for a while before you turn it off.

Car Jump Start an ATV Battery

You can actually use a car to jump start an ATV. This can be really useful if you just drove for miles and miles to a location and then found out your ATV isn't turning over.

Connect the wires like you would with any other ATV/ATV or car/car set up. Then, do NOT turn on the car. The car battery is much stronger than the ATV battery, and if you turned it on you could cause problems to the ATV Battery. Instead, just try to turn on the ATV. If it was the battery preventing it from starting, then it should turn over.

These three ways to get your ATV battery going can be really useful when you find yourself stranded. Knowing the power of your machine, what it can do, and how to get it going is very important for this. But try to take good care of your battery at all times, and check to make sure it is in working condition before you leave.

Battery recovery | Battery resuscitation

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BlogHow to resuscitate a car battery

To restore a car battery, understand the reason that happened to the battery.

The reasons for failure of the battery can be:

  1. Oxide of the contacts of the battery terminals
  2. The battery has lost capacity and starting currents due to undercharging from the generator or current leakage, etc.
  3. Sulfation of the plates
  4. Short circuit in one of the cells (cans) of the battery.
  5. Decreased electrolyte level inside the battery.
  6. Battery freezing.

1. Oxide on the terminals is the simplest thing that can cause battery instability. Due to the oxide on the terminals, the connection of wires to the current terminals of the battery is poor. Therefore, the current from the starter to the battery is not supplied and the battery is not charged. At a critical moment, the battery simply will not start the car's starter.
In this case, you need:

- remove the growth of oxide on the terminals with a rag,

- clean the current leads of the battery and terminals,

- lubricate the terminals with technical paste, or treat with a special aerosol spray,

- recharge the battery.

2. The battery is dead and the car's starter is not spinning - the most common reason. The following points can lead to a complete or partial discharge of the starter battery:

- short city trips, long idle periods,

- current leakage due to damaged wire insulation in the car, additionally installed external sources of energy consumption (alarm, walkie-talkie, etc. ), cars.

In a discharged battery, the density of the electrolyte can be 1.18-1.22 g / cm 3, the voltage at the terminals under load is less than 10 V. In this case, the battery can simply be recharged.

Any transformer or pulse charger is suitable for recharging the battery.

If the device is automatic, you need to connect it to the battery in series:

- connect the charger wires to the battery, plus to plus, minus to minus;

- connect the equipment to the fixed network;

- select the charging mode.

The device itself will do the rest and control the charging current until the battery is fully charged.

A fully charged battery can be considered if the charging voltage and charging current remain unchanged for 1-2 hours.

If your charger is not automatic, then you should remember the general rules for recharging. The battery should be charged with a current value of 10% of the total battery capacity. That is, if you have a 60 Ah battery, then you need to charge it with a current of 6 A.

After the battery is fully charged, the electrolyte density will rise, the voltage at the terminals will be restored and the battery will be ready for use again.

3. Sulfation of plates. In other words, this is the crystallization of sulfuric acid on the surface of the plates, which prevents their normal "work". This happens due to natural wear and tear of the power source, and also prematurely if:

- you added pure electrolyte to the battery,

- the battery was undercharged for a long time,

- the battery was repeatedly brought to deep discharges,

- incorrect storage.

The following obvious clues serve as a sign of sulfation:

- the battery capacity drops rapidly (discharges quickly),

- when connected to the charger, the battery quickly charges and starts to boil,

- overheating of the plates, electrolyte boiling is observed on board the car after trips and increase the voltage at the outputs.

It is almost impossible to restore such a battery. But, in non-started cases, you can try to restore the battery using:

- a special charger with a desulfation function,

- by long-term charging the battery with low current, after adding distilled water to the battery.

4. Short circuit in one of the cells (cans) of the battery. A short circuit, as a rule, occurs due to shedding of the active mass, the existing sludge in contact with the negative and positive plates closes them.

Obvious signs will be the following facts:

- electrolyte is boiling in one of the cells;

- cloudy electrolyte in one cell;

- terminal voltage after charging 10-10.6 V.

At home, it is virtually impossible to restore a power source with a short circuit. It is better to take such a battery to a collection point.

5. Low electrolyte level inside the battery.

With long periods of operation, or when the battery cover is not hermetically soldered (or cracks appear), the liquid level inside the battery decreases.

In the first case, this is due to evaporation from the distilled water composition. In the second case - due to electrolyte leakage.

It is easy to restore the battery when distilled water evaporates:

- it is necessary to add distilled water to the battery filling holes so that the bare plates are covered by the composition by about 1-1.5 cm,

- recharge the battery.

If the battery cover is not hermetically soldered, you can solder the electrolyte leak yourself and add distilled water to the cell from which the liquid was leaving. Then you need to recharge the battery.

6. Battery freezing

A frozen battery becomes rounded. Frozen electrolyte expanding inside the battery, as a rule, breaks the plates and it is impossible to restore such a battery.

Battery freezing occurs due to deep battery discharge or low electrolyte density at significant sub-zero temperatures.

See the video instruction on this issue on the YouTube channel of the First Battery Company.

You can always buy selected batteries for your car in the stores of the First Battery Company. And when ordering through the online store You will receive free battery delivery to your home.

Looking forward to shopping!

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How to start a car with a dead battery?

Author : Dmitry Efimov

The battery is needed to power the car with electricity while the engine is running. It works on a repeating cycle: discharge - starting the engine - recharging the battery from the car generator.

A dead battery is a rather unpleasant phenomenon that every motorist has encountered. Starting a car with a dead battery is a difficult task, but with certain knowledge it is doable.

Zero car battery is an unpleasant situation that almost every driver has encountered. Starting a car with a dead battery is difficult, but possible if you understand the technology. .

Find out how to tell if your battery is low, what to do about it, and how to extend battery life.


  1. Causes of low battery
  2. How do you know if the battery is low?
  3. How to start the car if the battery is dead?
  4. How to prolong battery life?

Causes of Battery Discharge

Failure is a fairly rare reason due to which the battery is not able to power the vehicle's on-board system. Modern batteries, despite the average conditional service life of around 5 years, are able to work normally up to 7-8 years if the driver uses the vehicle correctly and the number of electrical consumers in the car is minimal.

If the car battery is dead, it is most likely due to one of the following reasons:

  • Sulfation of the metal plates. due to the aggressive effect of the electrolyte, the metal is gradually covered with lead sulfate, which leads to a decrease in the efficiency of the battery. Deposition on the plates is a natural process for the battery, and the sulfate is partially dissolved during the charging of the car battery, but this is usually not enough.

  • Electrolyte boil-off. The fluid level drops particularly quickly if the machine is operated at high temperatures or the battery is under heavy load.

  • Shedding of metal plates. Like the sulfation described earlier, this is a natural process. Driving over bumps with large vibrations, shocks accelerates the destruction of the plates, due to which their useful area decreases, and at some point it will not work or it will be very difficult to start a car with a dead battery for this reason.

  • Discharging the battery in the case. Partial battery charge can go into the metal body of the car. If the car engine has not been started for a long time, the battery may be completely discharged.

  • Electrical short circuit. Occurs due to the intersection of plates with different polarity. Sometimes this happens due to a factory defect - in this case, if the battery in the car is dead, the driver can return the battery under warranty, and they must accept it. Other causes of short circuit: outgrowths on the plates, their warping, rupture of separators.

  • Low electrolyte density. The average value of this parameter in each battery bank must not be less than 1.27 and must not exceed 1.29 g/cm3 in normal condition.

Also among the reasons for the rapid and complete discharge of the battery are improper operation, too low air temperature, malfunctions in the car's on-board network, and a breakdown of the generator.

How do you know if the battery is low?

If the battery in the car is completely dead, it is easy to notice - the car will not respond to attempts to unlock the alarm, and if you are already in the cabin, the engine will not start, the headlights will not turn on, the radio and other electrical consumers will also not function.

Another way to make sure the battery is critically low is to test it with a multimeter. A normally charged battery has a voltage in the range of 13 to 15 volts at the outputs. If the value is much lower, it will be difficult to start the engine and operate the car.

How to start the car if the battery is dead?

So, you are sure that the car battery is dead, but there is no way to charge it right now. There are several ways to help "revive" the battery and get to the house or service.

Method #1 - lighting from another car

Most drivers who have run out of car batteries use this method due to its simplicity. All you need is two wires with crocodile clips on both ends, and another car whose owner is willing to light your car.

The essence is simple - the batteries of both cars are connected, after which you start the car. For this method to work effectively, the cars must be of a similar class, for example, two SUVs.

Method No. 2 – pushing or auto-towing

If the car battery is dead and there is no way to light it, you can try to start the car “from the pusher”. Important: This method is only suitable for cars with a manual transmission. Process:

  1. Remove the vehicle from speed.
  2. Turn the key in the ignition.
  3. Push the car yourself or call assistants.
  4. Depress the clutch and shift into second gear.
  5. Release the clutch immediately and wait for the engine to start.

As soon as the engine starts, shift into neutral and let the engine warm up.

Method #3 - Starter Charger

Use the Starter Charger if you have mains power available. Connect it to the network and set the selector to the "Start" mode. Connect the positive cable to the positive terminal of the discharged battery, and put the negative cable on the engine block. Turn the key in the ignition and wait until the car starts, then warm up the engine before driving.

Method #4 - Charging in Boost mode

If the car battery is dead, but there is a charger at hand, but there is little time to use it, turn on the Boost mode. It is supported by many modern chargers and represents an accelerated replenishment of the charge level by increasing the strength of the current supplied to the contacts. So, if during normal charging the current is about 0.1 of the battery capacity, then in this mode its value increases by an average of 30%. Keep in mind that continuous use of this method has a negative impact on battery life.

Method #5 - contact the professionals

If none of the above methods gives the desired result, contact the LAT company, which has all the necessary equipment for battery stress testing and alternator power testing.

Learn more