What lithium battery powered tool brand that has the best performance in
freezing weather? My 10 year old+ Makita tool set isn't nearly as
powerful as some newer tools. Even with new batteries, the tools have
sufficient power in cold weather.
What is the best brand for cold weather operation?
Thanks,
Drake
Drake Chamberlin
Athens Electric LLC
Ohio Electrical Contractor’s License 44810
CO Master Electrician’s License 4526
NABCEP Certified PV Installation Professional
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On 2022-01-19 11:58, Alex MeVay wrote:
Generally, storage or use at cold temperatures shouldn't be an issue,
as long as the battery can still deliver enough power to operate the
tool effectively.
Charging though...at cold temperatures, ion mobility goes down. If
the battery is charged too fast, the lithium ions can't make it into
the graphite anode fast enough and they start to plate out as metallic
lithium. At best, this results in a permanent reduction in capacity.
Next worst from there, the lithium metal can create an internal soft
short, immediately or at a later point in time, resulting in high
self-discharge or a dead cell. Worst case, it turns into a hard short
and a fire.
In theory, the BMS or charger should prevent charging too fast or too
cold, but who knows if an edge-case like this is actually implemented
correctly on any particular battery system. Be careful charging!
Alex MeVay
Genasun * Blue Sky Energy * http://sunforgellc.com
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