Re: [electricboats] AGM or LiFePo4

They have buck boost cc cv chargers made for solar but can use off a computer power supply too 

they about $30-40 on eBay 

Bms on eBay too

They adjustable max 60-130v

But u can dial in any voltage u want 

On Monday, April 27, 2020, 09:12, shredderf16 <Shredderf16@sbcglobal.net> wrote:

Pat,

Battleborne Lifepo4 are made in the US. I just got some batteries from another company in China that shipped in late January, so they were still shipping at that time. About $3k for 13 kwh worth with a BMS. The Tesla option is quite a bit cheaper but since they are pure lithium I don't know if I would want them on a boat. I think the Leaf is NIMH.

Jerry

On April 27, 2020, at 9:43 AM, greenpjs04 <forums@greensdomain.com> 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