It was explained to me by a local battery authority that Charging method changes. Constant voltage is agm charge method. Constant current -constant voltage is lifepo4 charge method. It can charge with either method but gains cycle life with the cc-cv method. I hope this helps thank you kind 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, 09:50:23 AM PDT, Phil Boyer via groups.io <philaboyer=yahoo.ca@groups.io> wrote:
I have 10KW of LifePo4 batteries on order from China and are due to land in Toronto first week of May. My cost so far was $2600 Canadian or $1900 US. I have not cleared customs yet so not sure what the duty and taxes will be.
My question is why do you need a different charger as mentioned below? The LifePo4 cells can be charged to 3.65 volts max so is there another factor I am not thinking of?
Phil
My question is why do you need a different charger as mentioned below? The LifePo4 cells can be charged to 3.65 volts max so is there another factor I am not thinking of?
Phil
On Monday, April 27, 2020, 11:49:32 a.m. EDT, L Schmitz via groups.io <terminalift=yahoo.com@groups.io> wrote:
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=yahoo.com@groups.io> wrote:
Is that 24v or 48v?
Can buy surpluses Tesla , leaf or other packs too
On Monday, April 27, 2020, 07:43, 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
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