Charging GC2 with Rogue MPPT Solar
Charging a pair of USB2000 golf carts with the Rogue MPPT 3048. US battery says the absorb voltage should be 14.7V (for 2 GC2 in series) held for 2-3 hrs, with charge terminated by max time or when...
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Almot wrote:brulaz wrote:
now I've been convinced to boost my float even higher when camping.
Either this, or leave it slightly below the recommended 1%C. When you are "camping", rather than just "charging", there is always some load even when you've turned off everything you could. Fridge, LP sensor, and self-discharge alone can draw 0.8-1.5A. So if you set FLOTR to 0.5A, it will never drop that low, and then timer function FLOTM will run 2 hours just like you wanted.
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I've been trying to play with it today but it's been grey and rainy. So we've been inside using a lot of electricity and I don't think it's ever made it out of MPPT. This may be the first day the batteries haven't been fully charged at nightfall since I got the solar system installed.
Currently set to 14.7V@20C Absorb, for either 2 hr (FLOTM) or 1A (FLOTR) with float V set up to 14.4V, when camping.
But I will also try reducing FLOTR to 0.5A and/or increasing float V to 14.7V when camping one of these days. Going home tomorrow though ...
