Should I be Concerned with a Frozen Battery

[jbrychka]

My bike battery was shipped separately and was scheduled to be delivered to a UPS Access Point. Unfortunately, it was delivered to the house and was exposed to 0 degrees Fahrenheit for 3 days. Should I be concerned that the battery may be damaged?

 

[rich c]

Nope, no damage just sitting in the cold. Now charging when it is that cold, that's an issue.

 

[Deleted member 4210]

Nope, no damage just sitting in the cold. Now charging when it is that cold, that's an issue.

Nope, not necessarily true. Depends upon SoC when shipped, and if almost drained, the BMS could shut it down permanently, not allowing any re-charge. Cells may not be dead, but they might as well be, bc even if you send it to a repair center, it will cost big bucks to verify that, and then replace your BMS.

 

[Deleted member 4210]

My bike battery was shipped separately and was scheduled to be delivered to a UPS Access Point. Unfortunately, it was delivered to the house and was exposed to 0 degrees Fahrenheit for 3 days. Should I be concerned that the battery may be damaged?

Have you tried to use it, after you let it warm up to room temperature for a day or so ? Could be fine.

 

[Sierratim]

Battery University recommends charging Li-ion batteries 32°F-113°F and storing them between -4°F and 140°F. Under this criteria you're probably OK as long as you charge it after it warms up.

I personally store and charge my batteries above 40°F.

 

[jbrychka]

I'll probably start charging it tomorrow. Can I do anything with a volt meter to determine if it is ok?

 

[rich c]

A volt meter is only a gage for measuring the voltage. It will not tell you cell health.

 

[Browneye]

Voltage = cell health
Warm to room temp, put on charger. Go ride.

 

[jbrychka]

Thanks for all your feedback. They voltage was 54.5 after the charge which Surface bike support claims that is a healthy battery. I have ridden it about 10 miles with a lot of hill climbing and it’s at about 75% capacity. I’m planning a long ride this weekend to see how the battery holds up but on the surface, the battery seems fine.