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Re: AGM or LiFePo4


 

Hello Pat,? I did the upgrade last year. I went from 4? 12v 220 ah agm to? ?lifepo4? ? I put together 4 battery boxes with? 3.2v 90ah cylinder cells. 4P4S for each box. Then in series for 48v system. You will need a bms and a different? charger? This is a cool upgrade and not too difficult.. I am able to monitor the batteries in charge and discharge mode at any given time with my I phone.? I have great continuous run time and overnite charging with? my dock power. I can suggest a couple sources depending on east or west coast usa.;? I hope this helps.? thank you? best regards Larry Schmitz

?Terminalift LLC
9444 Mission Park Place
Santee, CA 92071
Ph: (619) 562-0355
F: (619) 562-2060



On Monday, April 27, 2020, 08:03:54 AM PDT, sw via groups.io <v1opps@...> wrote:


Is that 24v or 48v?
Can buy surpluses Tesla ,?leaf or other?packs too




On Monday, April 27, 2020, 07:43, greenpjs04 <forums@...> wrote:

Hello everyone,

Over 10 years ago, you guys helped me to convert my 24' pontoon to
electric.? I ended up with a Torqeedo Cruise 4, four group 31 AGM
batteries and a 4 channel DualPro charger.? I've had ten great summers
using this configuration on some inland lakes in Ohio. Last summer, I
started noticing the battery capacity wasn't what it was when the
batteries were new.? The Torqeedo would shut down due to "depleted
batteries", but I was always able to turn it off and then back on where
upon I could return home at a slower pace. That is one of the things I
like about electric vs gasoline.? I have never been stranded.

Anyway, I suppose it is time to replace the batteries.? I can't complain
about getting 10 years out of them.? As I see it, I have two options:

1. Buy another set of AGMs - a little under $1000

2. Buy LiFePo4's - at least double the cost, but less weight and more
usable range.

As an engineer, I like using new technologies so I lean toward the
LiFePo4's.? However, many of the posters I follow on this forum bought
them directly from Chinese suppliers.? With all the COVID 19 disruptions
to business and our government threatening to raise tariffs, I worry
about placing an order that never gets filled.

I would appreciate any opinions on which way to go and any
recommendations for low risk suppliers for batteries.

Thanks,

Pat





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