First Top Charge
I finally got my volt/amp meter wired in to my Mega Watt and started my first Top Charge. Initial battery voltage was 13.2v. Mega Watt was set to 15v. Turn-on voltage was 14.8v @ 33a. It quickly went ...
Forum Discussion
I will try to answer all questions.
Stopped charge at ~8:30 last night. Total charge time ~11hrs.
Voltage at stop time ~14.8v (dropped off quickly to 13.5v).
Voltage measured this morning 07:00 (10.5hrs after charge stopped) 12.88v at batteries with only Victron monitor connected at bank shunt.
Cables are all marine grade 4ga. Exception is 3" doubled #12 solid from Mega Watt shunt.
Length Batt-Batt ~8", Batt-Shunt ~16", MW-Batt Bank ~ 12"
MW-Regarding the unlimited amperage @ 15v, The ah rating for the four batteries in series parallel is 470ah Each battery is 235ah. If I understood correctly the charge amperage should then be ~23a. When I first started the charge amperage at MW was set at 15v @ 33a quickly dropping to 5.4. Within an hour the amperage was a 3.3a. Amperage leveled out at ~2.4a. When I increased the voltage to 15.3 during the last two hours of charging the amperage rose to 4.5a.
Did this rate of charge pose a risk of damage to the plates?
I will check SG on all cells and report back! Thanks again for all the support!
Stopped charge at ~8:30 last night. Total charge time ~11hrs.
Voltage at stop time ~14.8v (dropped off quickly to 13.5v).
Voltage measured this morning 07:00 (10.5hrs after charge stopped) 12.88v at batteries with only Victron monitor connected at bank shunt.
Cables are all marine grade 4ga. Exception is 3" doubled #12 solid from Mega Watt shunt.
Length Batt-Batt ~8", Batt-Shunt ~16", MW-Batt Bank ~ 12"
MW-Regarding the unlimited amperage @ 15v, The ah rating for the four batteries in series parallel is 470ah Each battery is 235ah. If I understood correctly the charge amperage should then be ~23a. When I first started the charge amperage at MW was set at 15v @ 33a quickly dropping to 5.4. Within an hour the amperage was a 3.3a. Amperage leveled out at ~2.4a. When I increased the voltage to 15.3 during the last two hours of charging the amperage rose to 4.5a.
Did this rate of charge pose a risk of damage to the plates?
I will check SG on all cells and report back! Thanks again for all the support!
