How to Revive a Starved Electric Vehicle Battery?
2 Answers
To revive a starved electric vehicle battery, follow these methods: 1. Charge the battery in parallel with a set of good batteries and observe if the battery becomes hot. If it does, unplug the charger, wait for 1 hour, and then charge again for 20 minutes. Repeat this cycle 3 times before fully charging the battery. 2. Check if the battery is low on water. If it is, add distilled water and charge it at one-tenth of the rated current until fully charged. Then discharge it at one-tenth of the rated capacity until completely discharged. Repeat this cycle 3 times. 3. Use a high-power charger and high current to charge the battery. Stop charging if the battery becomes hot and resume charging once the temperature drops. Repeat this process for 2 to 3 days, and there is a certain probability of reactivation.
Last time my electric car battery died, it gave me a real scare—I thought I'd have to replace it, but it turns out it can be revived. First, I dug out the slow charger I keep at home, plugged it in, and let it charge for a full day. When the voltage is low, never use fast charging—it can damage the battery. After charging, try starting the car. If it still doesn’t work, use a multimeter to check the battery voltage. If it’s below 12V, the battery might be severely depleted, and you’ll need to take it to a repair shop for professional recovery. I make sure to charge it at least once a week, especially in cold weather or if I’m not driving it for long periods, to avoid deep discharge. Now, my battery has lasted over two years—saving money and hassle. The key is not to wait until it’s completely dead before taking action. Safety first!
