• Descent 298 publication date

    Our June/July issue will be published on Saturday 8 June

    Now with four extra pages as standard. If you want to receive it as part of your subscription, make sure you sign up or renew by Monday 27 May.

    Click here for more

Battery charging warning

royfellows

Well-known member
A bit more.
I have just been looking at the data sheet for the Panasonic NCR18650B cells used in my most popular lamps.

Charging, as I said should never be done below 0C, and according to manufacturers I would recommend above 10C.
It also appears that the discharge characteristics are temperature affected. The graph below is from the data sheet.

I have no reason to suppose that this differs between different cells and the advice should include also Sanyo and Tesla.
Most quality retail cells are 're wraps' with protection circuits of these OEM manufacturer cells.
 

Attachments

  • Panasonic18650_discharge.jpg
    Panasonic18650_discharge.jpg
    34.7 KB · Views: 303
Top