[electricboats] AGM or LiFePo4

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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