I spoke to Gearbest and they would like to help people power the UF-1504 from their group buy so they have offered coupon codes for the Keeppower 26650 batteries. They offered codes for the single batteries and 2 pack batteries. This is a heck of a deal and some of the best prices I’ve seen on these batteries.
● Typical Capacity: 4200mAh (0.2C discharge)
● Minimum Capacity: 4100mAh (0.2C discharge)
● Nominal Voltage: 3.7V
● Rated Charge: CC/CV, 4200mA, 4.20V
● Standard Charge Time: 2.0 hours
● Maximum Charge: 6A
● Full Charged Voltage: 4.20V±0.05V, 50mA end-off current
● Discharge End-off Voltage: 2.50V
● Max. Plus Discharge Current: 50.0A
● Max. Constant Discharge Current: 30.0A
● Initial Impedance: Max. 25mΩ
The coupon code is Keeppower for both batteries
I posted my Affiliate links as well, use it if you want.
$10.75 KeepPower 4200mAh 26650 Rechargeable 3.7V IMR Flat Lithium Battery Max 50A Non Aff Link / Aff Link
$20.22 KeepPower 4200mAh 26650 Rechargeable 3.7V IMR Flat Lithium-ion Battery Max 50A - 2 Pcs Non Aff Link / Aff Link
You can check out the original post here