My cart has 8 Trojan T-105's.
Regarding charging them the Trojan web site says:-
"Batteries should be charged after each period of use."
I called Trojan technical support and asked for a definition of this - the tech said "a round of golf" - which makes sense as the batteries would 'normally' be used on a cart owned by the golf club. So he further clarified this as around 5 or 6 miles.
The web site also says:-
"Lead acid batteries do not develop any type of memory. This means that you do not have to deep discharge or completely discharge a battery before recharging it. For optimum life and performance, we generally recommend a discharge of 20 to 50% of the battery’s rated capacity even though the battery is capable of being cycled to 80%."
A full charge (for a 48V) system is 50.93V and 20% discharge is 49.99V. A 5 or 6 mile drive may take the batteries down to this voltage, but probably not on my pack.
A 50% discharge is 48.41V. I asked the tech when is this voltage measured? He said after the cart has been idle for about 4 hours as the batteries will recover some. I asked what 50% voltage would be when the cart was being driven - he said 46.7V. So then after 4 hours of idle the pack would go back to 48.41V.
I need a digital meter installing.
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