Somewhat wacko battery/solar question
I have two 100 Ah Renogy AGM batteries in my TT, connected to two Renogy 100 watts solar panels on the roof via a Renogy 30A PWM controller. I want to install an inverter so I can use coffee make...
Forum Discussion
EnzoColorado wrote:valhalla360 wrote:
How low are the existing batteries come morning?
A 600w coffee maker should pull around 50amps for maybe 10min for a total consumption of around 8.5amp-hr. That seems quite reasonable off a 200amp-hr battery bank unless they are borderline covering the overnight consumption.
As previously mentioned, mixing different battery types (doubly so with different ages) is not recommended.
Usually low to mid 60% in the morning before the panels start to receive lights. I'm told that AGM batteries shouldn't be discharged more than 50% so I'm using 100amp-hr useable capacity in my back of napkin calculation.
With At 60%, that's 120amp-hr left in the batteries come morning. You have another 20amp-hr remaining before you hit 50%, so pulling 8-9amp-hr to run the coffee maker shouldn't be a big problem.
When those lead-acid batteries die, uping the usable amp-hr a bit might be nice but sure looks like it's doable with the current setup.
