Either scrap or have them rebuilt at a local battery shop that provides that service. Sometimes it cheaper to have the cells replaced. Sound like they both have at least one bad cell, or the charger is malfunctioning
How long does it take for an 18v battery to charge
A Dewalt battery varies in cost. This is due to the fact that a Dewalt battery is to charge up power tools for the use of cordless work.The prices vary according to voltage.
yes as long as you only use one leg and the neutral of the 220 or if the charger is designed to operate on either voltage
It should take roughly 1-3 hours to charge the batteries in a hoverboard.
Makita NiMh 14.4V requires 55W Milwaukee 18V Li-Ion requires 110W Dewalt NiMH 24V charger requires 230W
It should take roughly 1-3 hours to charge the batteries in a hoverboard.
No, it doesn't. You just charge it with the charger that it comes with and it should be fine.
The two batteries can be wired in series BUT unless they are identical batteries in an identical state of charge they should be checked regularly to see if one of them is fully charged (the voltage has risen to 14.5 volts).
I cannot definitely answer your question as I have no data on those specific batteries, however did you allow the batteries to fully charge before trying to use them? Many modern high capacity rechargeable batteries come with a small charge at the time of sale and if used in that state they will be permanently damaged. To prevent damaging them always fully charge them before using them (and this first charge will take several hours).
You'll have to get your batteries replaced. Some take AA batteries, but you may have to call the manufacturer if you have a propietary battery.
Between 12V-14.2V is recommended, however standard charging units will optimize their charge to your batteries needs.
how Can you charge multiple 12 volt batteries with a car?