Why My Traxxas Battery Won’t Charge?

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Traxxas outperforms many other RC brands in terms of performance, reliability, strength, and speed. However, RC batteries may sometimes develop malfunctions, such as an inability to charge.

Your Traxxas battery won’t charge because it has been over-discharged. It may also be because of a defective charger, faulty connectors, or a shorted circuit. A smart charger may help revive a dead Traxxas battery.

We’ll cover potential explanations why your Traxxas battery won’t charge and how to restore power to the battery in this article. We’ll also discuss battery maintenance tips to help extend the longevity of your battery.

Why My Traxxas Battery Won’t Charge?

Why Your Traxxas Battery Won’t Charge

As for most RC car batteries, there are various reasons why your Traxxas battery isn’t charging. Given that Traxxas RC vehicles use either LiPo or NiMH batteries, it’s a good idea to explore possible reasons why either form of battery would not charge.

Reasons Why Your Lithium-Ion Battery Isn’t Charging

A defective Li-Po adapter is the most common cause of a battery not charging. It would be best to test your LiPo charger on a different battery system to determine whether the charger is the issue.

If the charger does not function, switch to a different power source and check for changes.

Another possibility is that your LiPo battery is refusing to charge as a result of a faulty link. Your charge wires, LiPo wires, or battery connectors may have a broken attachment. 

You should check all connectors for continuity with a multimeter to ensure they are working. If you discover any frayed wires, they will impair the efficiency of the batteries; hence, ensure that these cables are fixed or cut.

Finally, the battery could have been over-discharged. Excessive discharging will cause the battery to fail to recognize the connection and display an error message.

Several factors may contribute to your cells over-discharging, including:

  • A defective battery cell
  • Excessive battery use
  • Driving the RC vehicle regularly without a voltage cutout set on the ESC

Over-discharging typically damages a Li-Po battery or one of its cells, but you can restore the battery in some cases.

How To Revive an Over-Discharged LiPo Battery

Before continuing, you’ll need a smart charger capable of balancing multiple-cell packs and controlling the charge current. We strongly advise you to purchase the Tenergy Balance Charger. It features an easy-to-read display and a LiPO balance charger, which is critical for the health of your batteries.

Tenergy TB6-B Balance Charger Discharger 1S-6S Digital Battery Pack Charger for NiMH/NiCD/Li-PO/Li-Fe Packs LCD Hobby Battery Charger w/ Tamiya/JST/EC3/HiTec/Deans Connectors + Power Supply 01435

Once you have obtained an appropriate charger, you can recover your battery by following the steps

When the battery voltage is less than 3.0V/cell, you can charge the LiPo at a decreased rate of 1/20 C until the battery voltage exceeds 3.0V/cell.

There are two things to avoid while charging:

  • Never charge a LiPo battery with a NiMH charger.
  • Do not leave the batteries unattended during the initial restoration process.
NOTE: It will be beneficial to touch the batteries regularly to ensure they do not overheat or puff up. When batteries get too hot, this can be dangerous.

If the LiPo battery reaches 3.0V/cell, you can raise the charge rate to 1/5 C until the LiPo battery achieves 3.7V/cell. Once the battery passes 3.7V/cell, you can increase the charging rate to 1/2 C until the battery is fully charged.

Although this approach will bring your battery back to life, it will not repair the internal harm incurred by over-discharging. You will note a permanent decrease in the overall discharge rate. Additionally, over-discharging may have shortened the battery’s life.

Since LiPo batteries can be affected by excessive discharging, all Traxxas models have an integrated Low-Voltage Detection system that notifies you when LiPo batteries exceed their minimum voltage threshold. Keep an eye out for this warning to prevent further battery damage.

How To Store a Resurrected Battery Properly

When not in use for more than two to three days, you must store your LiPo batteries while leaving them charged. You can use the Store Mode on your Traxxas iD charger to keep your batteries safe in storage. 

TIP: you can put your batteries in Store Mode every month for better efficiency and battery life.

Reasons Why Your NiMH Battery Isn’t Charging

Your NiMH battery won’t charge for the same reasons as a LiPo battery, including:

  • Over discharging
  • A malfunctioning charger
  • Faulty wiring

Test your charger and inspect the wiring to ensure that they are not the source of your problem.

How To Revive NiMH Battery Pack That Has Been Over-Discharged

To restore a NiMH battery pack that has been excessively discharged, take these steps:

  1. Utilize a digital voltage meter to determine the battery pack’s overall output voltage.
  2. Divide the total output voltage by the number of cells. Proceed to the following steps if the outcome is below 1.0V/cell.
  3. Choose a similar battery of the same mAh capacity that is full.
  4. Connect the positive connector of the charged battery to the positive terminal of the dead battery.
  5. Attach the negative terminals in the same manner.
  6. Allow this connection to be active for no longer than one minute.
  7. Repeat the voltage measuring. The charging should increase the voltage by at least 80% of the original value. If the voltage is less than 50% of the initial value, there is a dead cell in the battery pack.
  8. Continue charging the battery pack by connecting it to the charger.

If you get a reading greater than zero after a few minutes of charging, the battery has been restored. 

However, if the battery remains dead after performing these steps, repeat the process numerous times. The battery will most likely come back to life after the process is repeated.

How Can I Maintain My Traxxas Battery?

Traxxas recommends the following tips to extend the life of your battery:

  • Never leave a LiPo battery drained.
  • Following use, recharge the batteries.
  • You should store batteries in a cool, dry place.
  • With each use, inspect the batteries to ensure they have not been compromised.
  • Clean and check your battery for frayed wires, broken tubing, and other visible damages.

How Long Should a Traxxas Battery Last?

Traxxas RC batteries usually last about 40 minutes before requiring a recharge. However, this can vary depending on how frequently you drive the car and the kind of battery you have.

Batteries will occasionally last less time if they have not been well maintained. You can prevent this by keeping them at a 40% charge in a cool spot. Slowly charging the battery also helps delay deterioration. 

The duration of a Traxxas battery until it needs to be replaced varies also. Still, they usually last between 500 and 1,000 discharge cycles. This battery life is primarily dependent on the kind of Traxxas battery you have. LiPo batteries have a lifespan of 300-500 cycles. In contrast, NiMH batteries have a lifespan of about 1,000 cycles.

Are There Different Types of Chargers I Can Use With My Battery?

There are three kinds of chargers that are often used for RC batteries:

  • Fast chargers. Fast chargers deliver up to 5 amps and charge in a fraction of the time. Additionally, they switch off automatically after charging is concluded.
  • Slow chargers. Slow chargers take significantly longer to charge a battery and remain on after charging completes fully.
  • Field chargers. Field chargers provide greater comfort to their consumers due to their compact size and portability.

Although each has several benefits, your best choice is to go for a smart charger that allows you to customize the charging voltage. A smart battery charger can maintain any battery regardless of its chemical composition, size, or power.

TIP: smart charger will maximize the life of your battery and, in some situations, will be able to restore aged batteries via functions such as cycling, forming, or balancing.

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