In fact, as long as you understand the principles of the two, lithium batteries with different structures can also encounter lithium batteries with the same parameters. It is also possible to use a lead acid battery charger, For example, the same 72v20ah lead acid battery charger For batteries, the specification of the charger is to output 88v and charge a current of 2.8 amps (some are nominally 3 amps). Plus, the difference between lead acid chargers and lithium battery chargers). is that the lead charger has a three-stage structure and has a floating charging function.
Ordinary 72V lithium battery, the most common is 20 string (99%) ternary lithium battery, its full rated voltage is 84V (significantly lower than 88V lead acid ) and the charging current is 84V. 2a to 5A (Usually 20ah lithium batteries use specialfications of 4a). It is not possible to use a lead acid charger because there is a risk of overcharging (the lithium battery's internal protection panel actually stops protecting when a certain cell reaches 4.2). V. If the protection board is normal, there will be no overload. It is not damaged after long-term use, but the battery is fully charged at 84V. The lead-acid charger does not reach the 88V jump light, but is higher. than the floating charge detection voltage of 84V. The charger is in the state where the running lights are on at the same time. Some chargers have 85V floating charge voltage setting, indicator light shows red light, low current charging. the charger delays for a while and turns to green light) (if the protection board is damaged, the lithium battery may be damaged by overcharging).
But if it is a lithium batteryum 21-string ternary (this is relatively rare and can be customized by DIY players), its full voltage is 88.2V, and an 88V lead-acid battery charger can fire. the lights. It can also shut down when fully charged, and the lithium battery will not decompose even after long-term use.
If it is a 24 cell lithium iron phosphate battery, its full voltage is 87.6V. It can certainly be charged with a lead acid charger. It can also stop and trigger the light. lithium resists overcharging. Higher voltages won't cause big problems.