[RE-wrenches] LiFePo4 Low Temp Charging Damage

[Ray]

This is the only company I know of that has dealt with the low 
temperature charging issue.  Its a great product, and the blue tooth 
monitoring is an excellent feature too.  This is what the other Li+ 
batteries should be doing.  The big down side is they are currently 
limited to 12v.  Wish they made a 48v pack.

https://www.lifebluebattery.com/rv-boat-low-temperature-lithium-ion-batteries/index.html

Ray Walters
Remote Solar
303 505-8760

On 5/21/21 12:12 PM, Larry wrote:
> My personal opinion is that you should not buy any lithium battery that does not provide adequate protection for all modes of operation.
>
> Freezing does not damage the battery; charging a frozen battery may damage it quickly. Trickle charging the battery is not the solution.
>
> There are two solutions: provide a heat source to keep the batteries above freezing or incorporate a temperature controller to disable the charger if the battery is unsafe to charge.
>
> Larry Crutcher
>
>
>> On May 21, 2021, at 8:44 AM, Mark Frye <markf at berkeleysolar.com> wrote:
>>
>> Folks,
>>
>> If I have a charger that does not have low battery charge cut-off, I can get in trouble if I have a frozen pack and apply a charging voltage.
>>
>> But, if I start with a pack that is above freezing and keep a trickle charge on it, can I keep that pack safe from freezing and damage?
>>
>> Or at some point, as ambient temperature drops, the pack will freeze and be damaged anyway?
>>
>> Thanks,
>>
>> Mark Frye
>>
>>
>> _______________________________________
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