Kastar 4-Pack Battery Replacement for RCA PRO-847 PRO-851 - Long Run

In this review the Kastar 4-Pack battery replacement is assessed for users who need reliable, longer runtime for older RCA and compatible camcorders. The bottom line: this pack is most valuable to photographers and videographers who want an affordable way to extend shooting sessions without replacing their camcorder, because the high capacity Ni-MH cells deliver noticeably longer run time than many stock batteries and the four-pack provides multiple spares for day-long shoots or travel. The review focuses on real-world runtime, build quality, and compatibility with listed RCA and Pentax models.

Key Features

• High Capacity: The 2650mAh rating gives longer continuous recording before a recharge is needed, reducing interruptions on shoots.
• Ni-MH Chemistry: The 6.0V Ni-MH construction balances run time and safety, making it a straightforward replacement for original Ni-MH packs.
• Low Self-Discharge: Embedded seal structure helps these batteries hold charge during storage, so spares stay ready between uses.
• Safety Assurance: A mix-protection additive in the cathode reduces material degradation, which should extend usable cycle life up to the claimed 1000 cycles.
• Four-Pack Convenience: Shipping four identical batteries gives immediate backup options and reduces downtime when one pack needs charging.

Who It's For

The Kastar 4-Pack is aimed at owners of compatible RCA and Pentax camcorders who need extended run time without buying a new camera, and who prefer carrying spares rather than relying on portable chargers. It suits event videographers, hobbyists, and anyone shooting long sessions where swapping batteries is easier than charging between takes.

This pack is less suitable for owners of newer cameras that use different chemistries or voltages, or for those who require a single OEM-style battery with manufacturer support; buyers should confirm model compatibility with the provided list before purchase.

Pros & Cons

Pros

• Higher rated capacity that extends run time compared with many original packs.
• Low self-discharge helps spares retain charge during storage.
• Includes four batteries, giving multiple backups for long shoots or travel.
• Safety additive aims to increase cycle life and reduce degradation over time.

Cons

• May not match OEM fit or finishing details exactly for every model, so confirm compatibility.
• Charger not included, so users need a compatible charger on hand.

Specifications

Battery Type	Ni-MH
Battery Voltage	6.0V
Battery Capacity	2650mAh
Pack Quantity	4-Pack
Cycle Life (claimed)	Up to 1000 cycles
Compatibility	Various RCA and Pentax camcorder models listed with matching battery codes

Our Verdict

The Kastar 4-Pack replacement is a practical value buy for users of compatible RCA and Pentax camcorders who want longer runtime and multiple spares. The combination of 2650mAh capacity, low self-discharge, and safety additives makes it a sensible, cost-effective way to keep older cameras shooting through events without frequent charging.

Frequently Asked Questions

Will these batteries fit my RCA camcorder?
Check the compatibility list for model and battery codes; the pack is designed for many RCA and some Pentax camcorders but buyers should confirm match before ordering.

Do the batteries come pre-charged?
They are typically shipped with a partial charge for safety; you should fully charge them with a compatible charger before first use.

Is a charger included?
No, the package includes four batteries only, so use your existing compatible charger or purchase one separately.