It was a good flashlight, but Ni-Cd B280K batteries ordered a long life.
Specifications:
1) Model: B280k
2) Voltage: 2.4 V
3) Capacity: 280 mAh
4) single cell weight: 12g
5) One cell size: 25 mm (d) * 8.4 mm (H)
As an option, replace it with popular 18650 lithium-ion batteries, but they are unprotected since they were removed from the laptop’s battery.
For alteration we need:
lithium ion battery 18650
button
protection unit in lithium-ion batteries
micro USB "socket"
We disassemble the flashlight:
We collect.
Let's start by protecting the battery from a critical discharge level.
We connect according to the scheme:
What is the button for?
To bring the protection board to its original state after operation, for this it is necessary to short-circuit the negative output of the can and the negative output of the protection board for a short time.
I bring the micro USB and the button to the rear, where there was a charging plug from the network
We collect, solder and commission everything. The flashlight will be charged from the usual charging of the smartphone.
