Quote:
Originally Posted by jimkamery
Please do your research on controllers and if you go with the LiFeP04 batteries, you are going to want and need a MPPT controller that is programmable for the batteries you are using. A PWM controller will charge them, but not as efficiently.
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Seconding your motion,
Additionally, a good mppt doesn’t cost much more than a good pwm. Plus mppt allows you to wire panels in serial without ratcheting up the cost, or buying a second cc. Serial also allows you to park portable panels 30ft away, oriented in sunlight, from the coach. Not possible with any but the most expensive pwm. For $120, you can buy a Victron Bluetooth 75/15 mppt capable of supporting over 400w of solar. (2 pairs of serial 100w panels). In the end, the mppt will outperform the pwm because it can efficiently convert higher voltages to charging power.