Kastar 2-Pack Battery Replacement for RCA CC634 CC-638 - High Capacity

In this review the focus is on whether the Kastar 2-Pack Battery Replacement is a practical upgrade for users of older RCA and compatible camcorders. The bottom line: this kit is best for owners who need significantly longer run time from legacy camcorder models because the high capacity 2650mAh cells meaningfully extend shoot time compared with typical stock Ni-MH packs. The reviewer tested fit and basic charge persistence and found the pack is a straightforward, no-frills replacement that emphasizes capacity and cycle life rather than novelty features.

Key Features

• High Capacity: The 2650mAh rating gives noticeably longer recording time between charges, which reduces interruptions during long shoots or events.
• Ni-MH Chemistry: Uses an established 6.0V Ni-MH design that is broadly compatible with the listed RCA and Pentax models and charges on standard chargers for those batteries.
• Low Self-Discharge: The embedded seal structure and construction help the batteries hold power longer on the shelf, so they remain useful after periods of storage.
• Safety Assurance: Additives in the cathode material are intended to protect against material degradation and extend overall lifespan up to around 1000 cycles under proper use.
• Two-Pack Convenience: The package includes two identical replacement batteries so users can rotate packs for continuous shooting or keep a charged spare ready.

Who It's For

This pack is targeted at photographers and videographers who still use RCA or compatible camcorders such as older CC6xx series models, Pentax handhelds, or other devices listed in compatibility notes and who need reliable extended runtime without changing equipment. It is especially useful for users who prefer Ni-MH chemistry and want a drop-in replacement that fits existing chargers and mounts.

It is less suited to someone who needs the absolute newest battery technology like lithium-ion with built-in device communication, or to users who cannot confirm their exact model compatibility from the included compatibility list. Those users should verify model numbers carefully before buying.

Pros & Cons

Pros

• Higher 2650mAh capacity offers longer recording sessions between charges.
• Ni-MH chemistry and 6.0V rating make it broadly compatible with the listed camcorder models.
• Two-pack provides a ready spare so you can swap batteries and keep shooting.
• Construction and additives aim to extend cycle life and improve shelf retention.

Cons

• Not a lithium-ion pack, so energy density and weight differ from modern Li-ion replacements.
• Compatibility requires checking the long list of models; not universal for all camcorders.

Specifications

Our Verdict

The Kastar 2-Pack Battery Replacement is a solid, practical choice for owners of older RCA and compatible camcorders who want longer runtime and a spare battery without changing chargers or camera hardware. Given the 2650mAh capacity, Ni-MH chemistry, and the two-pack format, it represents good value for users who prioritize shoot time and cycle durability over the slimmer, newer lithium alternatives.

Frequently Asked Questions

Will these batteries fit my RCA CC-634 camcorder?
Yes, the pack is listed as compatible with RCA CC-634 and other CC6xx series models; verify your model number against the compatibility list before purchase.

Can I use my existing charger?
These are standard 6.0V Ni-MH cells and will charge on chargers designed for the original compatible battery models.

How long will the batteries hold charge in storage?
The low self-discharge design helps them retain charge longer than some Ni-MH cells, making them suitable for occasional use and as backup packs.