Check the exact specs on your proposed battery pack. Many (most?) will safely
discharge down to into the lower temps range and only require the charging part
of the equation to be over 32F, or whatever is listed. You should see both
ratings listed for most battery manufacturers.
Some of the ebikes offer a removable pack, and I would think that would be a
huge advantage in this situation! Like, my old "gen1" Currie Trailz ebike from
2008 had a rear rack that would hold up to 2 of the "RMB" battery packs. You
would simply unlock and pull them right off of the saddlebag slot they mount
in. And can then park the bike wherever needed, but walk the battery packs
inside to charge where the temps are good.
On Monday, October 6, 2025 at 08:10:53 AM PDT, EV List Lackey via EV
<[email protected]> wrote:
I'm not a battery expert, so take this with a large saltshaker of salt.
I like LFP for safety, but specific energy and energy density are lower, and
weight and size are important on an e-bike.
I think that for safety it's probably most critical that the battery is of
good quality from a reputable assembler and has a good reliable BMS,
In spring 2024 I bought an e-bike from MFC, an assembler located north of
Paris. They supply some of the mid-price e-bikes sold in France at mass-
market places such as E. LeClerc and Intersport. I'm not aware of any
safety problems or recalls in their bikes other than one case, which
involved a midmotor pedal crank that tended to shear internally, not a
battery problem.
The lithium battery is Chinese, but I trust MFC to have picked it reasonably
carefully. With their volume, recalls would be expensive.
I'm not afraid to charge my e-bike in the garage any more than to charge my
car in the garage.
I may be overly cautious, but I would be leery of batteries offered on
Alibaba, Ebay, and Amazon, unless you have a way to vet the manufacturer.
In 2011 when I was converting a Pb scooter to Li, I looked on the e-bike
forums such as Endless Sphere for battery vendor experiences and
recommendations.
For a similar recent thread, search for the terms
my battery research story and what I finally picked endless sphere
I'm sure you can find other similar threads.
Also, some folks use name-brand power tool batteries, reconfigured.
David Roden, EVDL moderator & general lackey
To reach me, don't reply to this message; I won't get it. Use my
offlist address here : http://evdl.org/help/index.html#supt
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