[EVDL] Remove UV alarm on my LiFePO4 batteries?
Hi Bill etc,
Does this mean I can remove the pesky undervoltage 2.6V per cell alarm on my car while driving for my LiFePO4 batteries? (CALB 130ah)
maybe the manufacturer was just kidding about the undervoltage limit :-)
have a renewable energy day,
www.REEVA.info community service RE & EV's
Date: Wed, 04 Jul 2012 18:08:05 -0600
From: Bill Dube <email@example.com>
Subject: [EVDL] "Zero volts = OK for LiFePO4" (was: A123 ALM 12V7
Batteries now charging)
To: Electric Vehicle Discussion List <firstname.lastname@example.org>
Content-Type: text/plain; charset="us-ascii"; format=flowed
The "zero volts" data was presented on this list many years ago. I
remember it well, but a brief search of the archives did not turn it
up. Very well documented tests were performed and results presented
on this list showing that LiFePO4 cells were not only unharmed by
discharging them to zero volts, the internal resistance actually went
down after discharging to zero volts, improving the specific power.
I know that A123Systems did extensive internal testing (unpublished)
on this effect and was on the verge of patenting the "discharge to
zero" process, but then found out that this was already in the public
domain. (I was the one that told them about the results presented on
If you don't want to take my word for the facts, and absolutely must
see the data yourself, do the search of the EVDL archives and find
the thread on the subject. Maybe 7 years ago?
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