Kastar 2-Pack Battery and AC Wall Charger Compatible with Sharp BT-H21

In this review the Kastar 2-Pack Battery and AC Wall Charger is examined for photographers and owners of compatible Sharp cameras who need dependable spare power. The bottom line: this kit is for people who want a straightforward replacement battery set with a compact AC charger that works worldwide on 100~240V. The single biggest reason to buy is the combination of high-capacity 2900mAh Ni-MH cells and a foldable, travel-friendly charger that clearly indicates charge status with red and green LEDs.

Key Features

• High capacity battery: The included 2900mAh Ni-MH batteries deliver extended runtime compared with older, lower-capacity replacements so you can shoot longer between charges.
• Wide voltage compatibility: The AC charger accepts 100~240V 50~60Hz input, making it suitable for international travel without a voltage converter.
• Clear charge indicator: The charger uses a red LED while charging and a green LED when ready, giving a simple visual cue to avoid overcharging.
• Compact charger design: The charger features a foldable flat pin for easy storage and packing, reducing bulk in a camera bag.
• Complete starter kit: The package includes two batteries plus one AC charger so you have spare power right away without needing additional purchases.

Who It's For

This kit is best for owners of compatible Sharp cameras and any user who wants a reliable, higher-capacity Ni-MH spare battery set paired with a basic AC charger. Photographers who travel internationally will appreciate the 100~240V input and foldable pin for packing into a carry-on or bag.

It is less suitable for users who need a car adapter or European plug included in the box, as those are not supplied, or for those who require fast-charge USB-C convenience, since the charger outputs DC 4.2V at 600mA.

Pros & Cons

Pros

• High-capacity 2900mAh Ni-MH batteries extend shooting time compared with many OEM replacements.
• Charger supports global AC voltages (100~240V 50~60Hz) for travel use.
• Foldable flat pin and LED indicators make the charger simple to pack and monitor.

Cons

• The kit does not include a car adapter or alternate plug types, so travelers may need an additional accessory.

Specifications

Battery type	Ni-MH
Battery voltage	3.6V
Battery capacity	2900mAh
Charger input	AC 100~240V 50~60Hz
Charger output	DC 4.2V 600mA
Indicators	LED red charging, green full/standby
Package contents	2-Pack Batteries + 1 AC charger

Our Verdict

The Kastar 2-Pack with AC wall charger is a practical value buy for Sharp camera users who need reliable spare batteries and a travel-friendly charger. Its 2900mAh Ni-MH cells, worldwide AC input and clear LED indicators make it a sensible replacement kit, though buyers should note the absence of a car adapter or alternative plug options.

Frequently Asked Questions

Are these batteries compatible with Sharp BT-H21 and BT-H22?
Yes, the kit lists compatibility with Sharp BT-H21, BT-H22 and related models, and is designed for the matching camera models noted in the product description.

Does the charger work overseas?
Yes, the charger accepts AC 100~240V 50~60Hz so it works with international voltages; a plug adapter may be needed for different wall outlets.

Is a car charger included?
No, the package includes two batteries and one AC charger only; a car adapter or European plug is not included.