USB-C Input | 4.2V 2.0A Output | Fits 21700, 18650 & More | Cable Included
One Bay. Most Common Li-ion Sizes. A compact, no-fuss charger for the 3.6V/3.7V lithium-ion batteries that power your rechargeable flashlights. The spring-loaded contact slides to fit cells from a small 10440 up to a 21700 or 26650, and it charges from any USB power source using the included cable.
Powertac Single Bay USB-C Charger:
This single-bay charger keeps a spare battery topped up at your desk, workbench or nightstand. Plug the included USB-A to USB-C cable into a USB wall adapter, computer or power bank, drop in a battery, and the indicator light shows it is charging. The sliding negative contact adjusts to the length of the battery, so one charger handles 21700, 26650, 18650, 18500, 18350, 17670, 16340 and 10440 Li-ion cells. The black textured housing has vent slots and a small footprint. Battery not included; batteries are sold separately. Need to charge two at once? See the Powertac Dual Bay USB-C Charger.
Key Features:
- Charges One 3.6V/3.7V Li-ion Battery at a Time
- Fits 21700, 26650, 18650, 18500, 18350, 17670, 16340 and 10440 Sizes
- Spring-Loaded Sliding Contact Adjusts to Battery Length
- USB-C Input: DC 5V 2.0A (max)
- Output: 4.2V 2.0A
- Charging Indicator Light
- Compact Black Textured Housing with Vent Slots
- USB-A to USB-C Cable Included
Specifications:
| Specification | Details |
|---|---|
| Charging Bays | 1 |
| Input | DC 5V 2.0A (max), USB-C port |
| Output | 4.2V 2.0A |
| Battery Chemistry | 3.6V/3.7V Li-ion rechargeable only |
| Compatible Sizes | 21700, 26650, 18650, 18500, 18350, 17670, 16340, 10440 |
| Battery Contact | Spring-loaded sliding negative contact, adjusts to battery length |
| Indicator | Charging indicator light |
| Housing | Black textured housing with vent slots |
| Cable | USB-A to USB-C (included) |
| Battery | Not included (sold separately) |
| Use | Indoor use only |
Li-ion only: This charger has a 4.2V output and is made for 3.6V/3.7V lithium-ion rechargeable batteries. Do not use it with NiMH, NiCd, alkaline, non-rechargeable lithium (such as CR123A) or LiFePO4 batteries.
Fits Powertac Batteries:
- Powertac 18650 Li-ion rechargeable batteries (2600 mAh, 3000 mAh and 3200 mAh High Discharge)
- Powertac 21700 5000 mAh Li-ion rechargeable battery
- Powertac RCR123A / 16340 rechargeable battery
How to Use:
- Power: Connect the USB-C end of the included cable to the charger and the USB-A end to a USB power source (5V, up to 2.0A).
- Insert Battery: Slide the negative contact back, place the battery in the bay with its positive (+) end matching the + mark, and let the contact close on the battery.
- The indicator light comes on while the battery is charging.
- Remove the battery once charged and unplug the charger when not in use.
Safety:
- Do not leave batteries charging unattended.
- Indoor use only. Keep dry and away from heat and flammable materials.
- Do not charge damaged, swollen or non-rechargeable batteries.
Package Includes:
- Single Bay USB-C Li-ion Charger
- USB-A to USB-C Charging Cable
Battery not included. Batteries are sold separately.
No Hassle
Limited Lifetime Warranty
Every Powertac flashlight is backed by our industry-leading Limited Lifetime Warranty: lifetime warranty on manufacturer's defects.

