20000mAh DIY Power Bank Case Kit – Dual USB Portable Fast Charger Shell
$17.99
Free Shipping Worldwide. Order tracking included with every shipment.
Description
Build your own 20,000mAh power bank
- no soldering, no tools, no headaches. Drop in 8 standard 18650 cells (sold separately), snap it shut, and you've got a high-capacity charger that costs a fraction of pre-built banks.
- Holds 8× 18650 cells for up to 20,000mAh of real-world capacity
- Dual USB output (5V/2.1A) charges two devices at once
- Micro-USB input recharges the pack in 5–7 hours
- On-board LED display shows exact remaining battery percentage
- Built-in over-charge, over-discharge, and short-circuit protection
- Tool-free assembly: just slot in your cells, no soldering required (cells not included)
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Prepaid return label, refunded within 5 days.
A note from the TronicsGo team
Every order is checked by hand before it ships. If anything's off — wrong item, defect, delay past 30 days — email hello@tronicsgo.com and a real person will sort it within 24 hours.
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