FLEXTAIL ZERO BATTERY 900CHT – replaceable power in RCR123A/16340 format
FLEXTAIL ZERO BATTERY 900CHT is a compact rechargeable Li-ion battery for equipment designed around the RCR123A/16340 cell format. With a rated capacity of 900mAh and 3.3Wh of energy, it can be used as either the main or a spare battery for compatible FLEXTAIL outdoor equipment.
Key benefits
- 900mAh / 3.3Wh capacity in a compact 16340-size rechargeable cell.
- Direct USB-C charging eliminates the need for a dedicated external cell charger.
- Replaceable design makes it practical to carry a charged spare on longer trips.
- Up to 500 charging cycles as specified by the manufacturer.
- 16.5 × 34 mm dimensions and a specified weight of 16 ± 2 g keep spare power compact and lightweight.
900mAh and 3.3Wh of energy
The 900CHT provides 900mAh of rated capacity and 3.3Wh of energy for compact devices using replaceable RCR123A/16340 cells. It offers greater energy capacity than FLEXTAIL's 650CHT version while retaining the same basic cell format.
Direct USB-C charging
A built-in USB-C charging connection means the cell can be recharged without a dedicated 16340 battery charger. FLEXTAIL specifies an approximately 2.5-hour full charging time, making the battery convenient for travel, camping and lightweight outdoor setups.
Compatibility
FLEXTAIL describes ZERO BATTERY as a standard 16340-format cell and offers 900mAh battery configurations with selected products including ZERO PUMP 2 and TINY HELIO 600Z. Before using it in another product, always check the required cell dimensions, terminal arrangement and the device's electrical requirements.
900CHT versus 900ZHF
900CHT should not be confused with FLEXTAIL's separate 900ZHF low-temperature version. Check the battery designation carefully if the dedicated low-temperature variant is required.
Cold-weather performance
For the ZERO BATTERY range, FLEXTAIL states that more than 60% of output capacity can be maintained at -20°C. This is a manufacturer performance statement rather than a complete operating-temperature specification.
Technical data
| Specification | Value |
|---|
| Brand | FLEXTAIL |
| Model | ZERO BATTERY 900CHT |
| Battery type | Rechargeable Li-ion |
| Format | RCR123A / 16340 |
| Capacity | 900mAh |
| Energy | 3.3Wh |
| Output current | 3.6A |
| Charging method | USB-C / Type-C |
| Full charging time | Approx. 2.5 hours |
| Charging cycles | Up to 500, manufacturer stated |
| Dimensions | 16.5 × 34 mm |
| Weight | 16 ± 2 g |
| Manufacturer warranty | 1 year |
Package contents
The offer is for one FLEXTAIL ZERO BATTERY 900CHT cell. A USB-C cable or any additional charging accessories have not been clearly confirmed as included and should therefore not be advertised as part of the package.
Frequently asked questions
Do I need a separate 16340 battery charger?
No. The ZERO BATTERY 900CHT supports direct USB-C charging.
Will it work with every device using a 16340 cell?
FLEXTAIL describes it as a standard 16340-format battery, but cell dimensions, terminal design and electrical requirements should always be checked before installation.
Is 900CHT the same as the 900ZHF low-temperature battery?
No. FLEXTAIL lists 900ZHF as a separate low-temperature variant.
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