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landyacht318's avatar
landyacht318
Explorer
May 29, 2016

Some battery temperature data during high amp recharge

Northstar group27 AGM battery. 90Ah capacity. 5:58AM 53Ah from full, 12.1v under 0.8 amp load 62.2f battery, 61.3f Ambient Apply Meanwell's 40 amps set to 14.9v( accounting for voltage drop on...
landyacht318's avatar
landyacht318
Explorer
Jun 01, 2016
The depth of discharge was not quite as deep this time, and it did have a fair load on it right before I started charging, unlike the previous test.

Battery got upto 82.2f this time. The battery monitor was out of whack, it was saying 1Ah from full while the battery was still accepting 2.2 amps. In my experience it takes about 1.75 more hours to taper from 2.2 amps to 0.4a at 14.5v with this battery.

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