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20000mAh PD100W DIY Battery Charger Case for 4×21700 Cells
Original price was: $41.54.$19.94Current price is: $19.94.
Pay now, in 4 interest-free payments of $4.99, or over 3β6 months
4 interest-free payments of $4.99
DIY power bank case for 4pcs 21700 batteries (not included)
Supports 100W full-protocol PD fast charging
Transparent design with LED display for power status
3 in stock
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Estimated Delivery Time3β7 business days
Compact DIY Power Bank Case
This DIY power bank case supports 4pcs high-capacity 21700 lithium batteries (not included) connected in series. Its transparent black ABS-PVC body allows you to monitor battery status with an imported LED screen displaying real-time remaining power.
Designed to be safe and reliable, this kit lets you build a 20000mAh portable charger tailored for your devices.
High-Speed 100W Fast Charging
The case supports full protocol two-way PD fast charging up to 100W. Compatible with multiple fast charging protocols including PD QC, AFC, and SCP, it efficiently charges laptops, phones, and iPads.
Two Type-C outputs and a USB port provide versatile charging options with outputs ranging from 5V to 20V and currents up to 5A.
Precise Assembly Required
Batteries must be welded in series to the motherboard connectors marked 'B+' and 'B-'. After assembly, activate the power bank by charging it for 3-5 seconds.
Note that welding accessories and batteries are not included in the kit. Additional wiring required for assembly is also not provided.
Key Specifications
This DIY kit measures approximately 153 x 55 x 34 mm and weighs about 184 grams.
Input supports DC 5V/3A, 9V/3A, 12V/1.5A, 10V/2.25A. Type-C 1 output offers up to 20V/5A, Type-C 2 up to 20V/3A, and USB up to 12V/1.5A.
What's in the box
- 1 Set DIY Power Bank Charger Case Kit (Motherboard and casing)
Discussion
4.3
Based on 9 reviews
I built 3 powerbanks with this set. it seems good and it fully satisfies my needs (backup for laptop and phone), i like how it shows the parameters. it charges quite fast (i saw 60w at some points.) sometimes, it cannot deliver 100w (with lower charge) but i believe that this is more problem of the cells than the powerbank electronics.
I don't really recommend it. It might be better to just buy something that uses 18650 batteries.
It hasn't been assembled yet, but I think I got a good deal at a low price.
Very good. It outputs 100 watts. I recommend it.
