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Old 01-26-2015, 11:59 AM   #15
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I think, running your batteries down to 40% occasionly is fine too, since you only boondock a few times a year.

Some of us boondock most of the time and others full time. I am full time off grid on my boat and try to boondock for the few months a year I RV. If I ran my batteries down to 30 or 40%, every night, they would probably last a year, if that.

I haven`t read Handy Bob in a while, but all the sources I have read, strongly recomend not going below 50% state of charge. The happy place with the least amount of generator time is between 60% and 80%. Charging beyond 80% is a lots of energy for a small gain.

My Sam`s Club batteries lasted 5 years for 1300 cycles, before they lost 75% of their capacity. Sure beats the electric bill.
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Old 01-27-2015, 09:07 AM   #16
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Quote:
Originally Posted by twinboat View Post
I think, running your batteries down to 40% occasionly is fine too, since you only boondock a few times a year.

Some of us boondock most of the time and others full time. I am full time off grid on my boat and try to boondock for the few months a year I RV. If I ran my batteries down to 30 or 40%, every night, they would probably last a year, if that.

I haven`t read Handy Bob in a while, but all the sources I have read, strongly recomend not going below 50% state of charge. The happy place with the least amount of generator time is between 60% and 80%. Charging beyond 80% is a lots of energy for a small gain.

My Sam`s Club batteries lasted 5 years for 1300 cycles, before they lost 75% of their capacity. Sure beats the electric bill.

Yep, sounds about right. I try to keep mine above 50% for charge time but 40% is my safe limit if needed. There have been a few updates by Handy Bob with some of the new batteries. Crown for instance is revising their guidance to be much more liberal with discharge and charging.
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