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N-Trouble's avatar
N-Trouble
Explorer
Oct 27, 2014

Bulk, float, equalization levels for Costco 6V batteries

I just picked up a new trailer over the weekend that has a built in 160W solar setup from ZAMP solar. I will be using two 6V Costco batteries in series on this trailer. The solar controller has DIP s...
64thunderbolt's avatar
64thunderbolt
Explorer II
Oct 27, 2014
Salvo wrote:
Interstate is now on the Costco GC2 label.

GC2 spec

bulk: 14.4V
absorption: 15.3V
float: 13.2V
equalization: 15.6V

What's interesting is that bulk and absorption are not equal. It appears they want to limit max current during bulk.


BUT as with Sam's Club. They may say Interstate but are mfg to Costco or Sam's specs. Not the same batt as sold in the Interstate store.

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