Charge the battery up fully - measure the voltage when you first connect the battery to the solar panel or battery charger. ... Then try the same with something really strong like a car starter motor (e.g. 100A = 1, 200W). ... battery to a one ampere lamp (12W) and count the hours until the battery is down to 10.8V The number of hours giving out 1 ampere (A) is the capacity of the battery in amp hours (Ah)anbsp;...
|Title||:||Do it Yourself 12 Volt Solar Power|
|Publisher||:||Permanent Publications - 2007|