Ampere time - Fiberglass RV
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Old 05-10-2021, 02:10 PM   #1
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Name: todd
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Ampere time

Just ordered a 100 amp hr battery from this outfit. Does anyone have experience with them. Pricing is 540 delivered. Currently I have very minimal needs. There is a 0.8 amp constant. Water pump. C pap no heat. Furnace about twenty amps s day total.
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Old 05-10-2021, 03:07 PM   #2
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who did you order from and what brand and type of battery?
I ordered from my local auto parts store. Note that I said local, not a national chain. They gave me best price!!
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Old 05-10-2021, 03:09 PM   #3
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For LifePO4 batteries, discharging is OK below 32 degrees F, but NOT charging below 32 degrees F (will permanently damage the battery). According Will Prowse's review and bench test here:



Ampere Time batteries don't have low temp cutoff for charging. Apparently this is the only problem with this battery. To work around this problem, don't charge this battery below 32 degrees F ambient.
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Old 05-10-2021, 04:53 PM   #4
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I suppose I could google it, but what is the reason to spend so much money on a 100 Ahr LiFePO4 battery? I am assuming that $540 is in US funds. That is like $700 in Canadian pesos! I had never heard of the 32įF, (0įC) charging limit. In Canada that could be quite a problem.
I was at Costco yesterday. They had the 240 Ahr golf cart batteries on for $175 CDN each. That gives a useful capacity of 120 Ahr for $350 CDN, or half the cost for more capacity. Mind you the size/weight is likely much higher with the golf cart batteries.
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Old 05-10-2021, 07:55 PM   #5
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Advantages of LifePO4 batteries:

3000 to 5000 cycle battery
ability to use a much higher % of the battery capacity, virtually 100%
23 to 30 lbs for a 100 ah battery
very high charge and discharge rates
linear charge rate right up to 100% (instead of 80% with lead acid)

So you wind up with a very compact light weight battery set. EDIT: Also versatile and very long lasting. Suitable for high amp draws such as inverter loads.
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