Jackery F3 - escalation path
The manual labels F3 "BMS or battery failure". There is no field repair, so the useful work is proving it and claiming warranty.
1
Reset, then recharge on mains for at least 30 minutes
Jackery's F3 article pairs the reset gesture (POWER + USB, 5 s) with a 30-minute charge before you judge the code.
2
Run one full discharge and recharge cycle
Long storage or a drifted state-of-charge estimate can raise a pack fault that a full cycle resolves. This is the last self-help step.
3
If F3 returns, stop cycling the unit and open a case
Have ready: model and serial number, a photo of the code on the display, and the purchase receipt. Jackery covers 36 months standard.
Registering the product extends cover to 5 years on most Explorer models.
Do not open the case
The pack is not user-serviceable and opening the housing voids the warranty, which is your only route to a replacement on an F3.
One exception worth checking first: if F3 appears only while solar charging, confirm the array is within the 60 V DC input limit before assuming a pack fault.