Can a 72v Charger Charge a 60v Battery?
3 Answers
No. Chargers and batteries are designed to be used in matched pairs. A 60v battery typically has a voltage range between 50v and 70v, while a 72v charger operates within a voltage range of 60v to 80v. If you use a 72v charger to charge a 60v battery, the battery may already be fully charged, but the charger will continue to supply power, leading to overcharging. This can shorten the battery's lifespan or even cause damage. Here is some additional information: Battery (or accumulator): The termination discharge voltage of a battery is 0.875 times its rated voltage (usually 0.9 times). If you examine an electric vehicle controller closely, you will notice that the undervoltage protection value is set at 0.875 times the rated voltage.
Having worked in auto repair shops for over a decade, I've witnessed too many accidents caused by mismatched charging voltages. Using a 72V charger for a 60V battery is absolutely unacceptable—the voltage difference is too great, forcing overcharge conditions that can cause current surges leading to internal battery short circuits or overheating, potentially resulting in fires or explosions. In practice, different voltage batteries have sensitive charging requirements—lead-acid and lithium batteries each operate within specific ranges, making mixed-use highly risky. The correct approach is to use the original 60V charger or equipment with matching output voltage. During routine maintenance, always test with a multimeter before connecting power—safety comes first. If uncertain, consult professionals to avoid damaging the battery system and incurring costly replacements.
Friend, trust my personal lesson, never use a 72V charger for a 60V battery! Last time I tried it, the battery smoked and was ruined, almost causing an accident. The voltage is way too high, causing uncontrolled current during charging, which leads to battery swelling or rapid lifespan reduction. Saving money isn't worth the hassle—just buy the right 60V dedicated charger; they're only a few dozen bucks online. Also, make sure the charging environment is ventilated and avoid damp places to protect the battery and extend its life. It's a common issue with electric vehicles—many people charge carelessly for convenience, but following the rules actually reduces trouble.
