Common square dance mobile speakers, on two kinds of battery specifications:
One kind of lead-acid batteries, cheap speaker products most of the use of such a heavier weight, the price is cheaper, usually 5-7 ah batteries, such a battery charger, you need to choose the lead-acid batteries dedicated to the 0.7-1A charger.
One kind of lithium battery, usually three lithium batteries in series, a *** two parallel, total *** 6 lithium battery power supply, there are 18650 batteries, there are similar to the cell phone battery sheet lithium batteries,
This kind of lithium batteries is usually a high-end point of the product, the overall weight is very light, must be a lithium battery charger for 12v, and the ordinary lead-acid battery charger, absolutely can not be mixed. The charger must be a dedicated 12v charger for lithium batteries and an ordinary lead acid battery charger.
If you can't tell the type of battery, you must dismantle the machine and tell the difference.