Increasing battery capacity
Is there anything else required to installing 2 6 volt deep cycle batteries other than just removing my old battery, and making sure the 2 new ones are wired in series correctly? Will my current char...
Forum Discussion
tim1970 wrote:
If I were to have 2 pairs of 6 volt batteries (4 total) would the recharge to 90% time double?
If you're starting out from the same state of charge, with a 60A converter, it would take longer but not double (as the charge rate, particularly with one pair of 6V batteries, would be limited by the battery acceptance rate a good part of the time rather than the converter's output capability).
However, in real life, things get a bit more complex as you presumably would not be discharging the bank as deeply, since it now has twice the capacity and you probably aren't using twice the power. You might be recharging from 70% to 90% rather than from 50% to 90%. It's a bit harder off the cuff for me to predict how the time would change in that scenario, but at any rate it would not be twice as long. The main advantages are that you can go twice as long before needing to recharge and, if you need to use high powered devices (say an inverter powering a microwave), the batteries each supply only half as much current and so can keep up a good bit more easily and with less voltage drop during the usage. Usable microwave operation time would more than double.
