12V 1000mAh Ni-MH Replacement Battery Pack (2-Pack) - Reliable Power

In this review of the 12V 1000mAh Ni-MH Replacement Battery Pack, the bottom line is straightforward: this two-pack is aimed at users of ICOM handheld aviation radios who need a dependable, like-for-like replacement. It is compatible with ICOM IC-A3, IC-A3E, IC-A22 and IC-A22E models and replaces CM-166 and CM-166S packs, so the single biggest reason to buy is compatibility combined with predictable runtime from a 1000mAh Ni-MH chemistry that minimizes memory effect. For pilots and ground crews who require steady communication power, this review finds the pack to be a practical and affordable spare or replacement.

Key Features

• Compatibility: Works directly with ICOM IC-A3, IC-A3E, IC-A22 and IC-A22E radios so users get a true replacement without modification.
• Battery Specifications: The 12V, 1000mAh rating offers stable energy output that supports extended communication sessions typical in aviation ground and cockpit use.
• Ni-MH Chemistry: Rechargeable Ni-MH cells provide reliable discharge performance and reduced memory effect for consistent daily reuse.
• Premium Cell Quality: Built with higher-quality cells aimed at better cycle life, which helps maintain capacity over many charge cycles.
• Two-Pack Convenience: Includes two identical battery packs, giving users an immediate spare for longer trips or quick swapouts during operations.
• Warranty and Support: Delivered with a 24-month warranty and customer service backing for added peace of mind after purchase.

Who It's For

This replacement battery pack is ideal for pilots, flight instructors, maintenance staff and ground personnel who rely on ICOM IC-A3 or IC-A22 series handheld radios and want a straightforward, compatible power solution. It suits operators who prefer Ni-MH chemistry for its predictable discharge and who value having a spare battery on hand for long duty days.

It is less suitable for users who require the absolute highest capacity or the latest lithium-based power chemistry, or for radios outside the listed compatible models. Buyers should confirm their radio model and original battery part number (CM-166 or CM-166S) before purchase to ensure fit.

Pros & Cons

Pros

• Direct fit for listed ICOM models, eliminating compatibility guesswork.
• Consistent 12V output and 1000mAh capacity deliver dependable runtime for routine aviation communications.
• Two-pack format provides an immediate spare and better value for frequent users.
• Ni-MH cells reduce memory effect and offer good cycle life for repeated charging.

Cons

• Capacity is 1000mAh, which is adequate but not as high as some modern lithium alternatives.
• Ni-MH chemistry requires compatible chargers and longer charge times than some fast-charge lithium packs.

Specifications

Our Verdict

The 2-pack 12V 1000mAh Ni-MH replacement battery is a sensible, cost-effective choice for anyone using ICOM IC-A3 or IC-A22 series radios who needs reliable, like-for-like replacement power. It delivers consistent performance, reduced memory effect and the convenience of a spare pack, making it good value for routine aviation communication needs.

Frequently Asked Questions

Will this battery fit my ICOM IC-A3 radio?
Yes, it is listed as a replacement for ICOM IC-A3 and IC-A3E and replaces CM-166 and CM-166S packs.

What type of chemistry does the battery use?
The pack uses Ni-MH rechargeable cells, which offer stable discharge performance and reduced memory effect.

How many batteries are included?
The package includes two 12V 1000mAh Ni-MH battery packs and comes with a 24-month warranty.