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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...
pianotuna's avatar
pianotuna
Nomad III
May 29, 2016
Thanks for taking the time to document this.

During the 78.9 temperature you are exceeding the gassing voltage.

At 72 also exceeding gassing voltage.

Here is a truncated table.

At 59 gassing voltage is 14.655

At 68 gassing voltage is 14.49

At 77 gassing voltage is 14.34

At 86 gassing voltage is 14.19

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