How To Work Out Amp Hours Of A Battery. Battery capacity is specified either in kilowatt hours or amp hours. Watts Volts Amps.
For instance at C5 a battery might safely provide 268 amp hours. A 12 volt 4ah battery could put out 48 watts for an hour. Each pair has an amp hour output of 45 Ah 45 Ah 9 Ah but because they are wired in parallel their voltage is unchanged at 6 volts.
Watts Volts Amps.
For a 500mAh battery that runs at 01Ah devicethats 05Ah01Ah. Most battery manufacturers recommend sizing the charger at about 25 of the battery capacity ah amp hour capacity. If not you can calculate it as Volts x amp hours Ah. It takes 1825 hours to charge half of its capacity at 2 amps 375 hours at 10 amps or 25 hours at 15 amps.
