T-Pain Is On A Boat: Re: [Electric Boats] Re: Electric Kayak [1 Attachment]

Monday, March 17, 2014

Re: [Electric Boats] Re: Electric Kayak [1 Attachment]

[Attachment(s) from Robert Lemke included below]

I charge with a 50 amp 14.8 volt charger. Unlike lead acid's surface voltage during charging that causes the charger to taper due to reduced voltage differential, the LiFePO4 pack takes the full 50 amp output of the charger all the way to 90% full, then tapers to zero.

I bottomed balanced these packs so just run them from 13 volts full to 12.2 volts. At 12.2 volts each cell is still above 3.0 volts by 0.05 volts. No BMS, just treat it as a regular battery making sure each cell never drops below 3.0 volts and doesn't charge above 3.7 volts.

From: Bill <bheintz@wans.net>
To: "electricboats@yahoogroups.com" <electricboats@yahoogroups.com>
Sent: Monday, March 17, 2014 7:23 AM
Subject: Re: [Electric Boats] Re: Electric Kayak

Curious, when you connect these LiFePO4 3.2v cells together, how do you charge them?
Do you monitor the condition of the individual cells in any way?

------------------------------------

Yahoo Groups Links

<*> To visit your group on the web, go to:
http://groups.yahoo.com/group/electricboats/

<*> Your email settings:
Individual Email | Traditional

<*> To change settings online go to:
http://groups.yahoo.com/group/electricboats/join
(Yahoo! ID required)

<*> To change settings via email:
electricboats-digest@yahoogroups.com
electricboats-fullfeatured@yahoogroups.com

<*> To unsubscribe from this group, send an email to:
electricboats-unsubscribe@yahoogroups.com

<*> Your use of Yahoo Groups is subject to:
https://info.yahoo.com/legal/us/yahoo/utos/terms/

__._,_.___

Attachment(s) from Robert Lemke | View attachments on the web

1 of 1 Photo(s)