⚡ Stay powered, stay unstoppable — wherever the trail takes you!
The MINCHEN 8.4V Battery Pack Case is a rugged, waterproof housing designed for 2 or 4 x 18650 rechargeable Li-ion batteries (not included). Featuring dual DC and USB output ports, it powers 8.4V or 4.2V bike lights and can emergency charge phones. With smart LED power indicators and built-in overcharge/discharge protection, it’s the perfect DIY power solution for serious cyclists who demand reliability and versatility in all conditions.
| Item Package Dimensions L x W x H | 4.5 x 3 x 3 inches |
| Package Weight | 0.14 Kilograms |
| Brand Name | MINCHEN |
| Country of Origin | China |
| Color | Black for 4 |
| Material | ABS, Plastic |
| Manufacturer | MINCHEN |
| Part Number | 8.4V battery case for 4x 18650 |
C**M
Very Good!
Very Good!
E**D
Good quality product
Contrary to some of the negative reviews.. I find this product to of good quality. Sturdy and rugged. Works as expected. I bought the 4 pack version and nothing seems out of place. Need to be careful not to put the batteries the wrong way.Only recommendation to the manufacturer is to design a fool proof mechanism to avoid short circuit the pack by putting the batteries the wrong way.
M**N
The USB plug is a POS
I have a headlight that uses a USB connector for the power and it is subject to movement. The cheapest USB plug is used and maintaining a connection is impossible.
P**T
USB only supports 1A
The USB only supports 1A/100ma so it is not very useful.
A**R
Five Stars
Nicely designed and easy to use
G**N
Cuts out from vibration
Works good for bike lighting as long as the road is smooth. Sharp bumps will cause the power to drop out, and the light goes out. The battery springs need to be stronger.
H**N
Don't buy
Does not work for my bicycle light as it should. It kept shutting off and appears to be out of charge in less than a 30 minute ride. I checked to make sure that the batteries are good and installed properly.
M**J
No over-discharge protection
These battery packs don't have 5V discharge protection. The 2S circuit will output power until 3V, running each cell down to 1.5V. This is territory to kill a Lithium cell, and a leading cause of battery explosions if the batteries are charged again.
Trustpilot
2 weeks ago
1 month ago
