Cut-Rate Batteries Compatible with EF-Johnson 51 FIRE ES Radio

In this review the Cut-Rate Batteries replacement for the EF-Johnson 51 FIRE ES two-way radio stands out as a practical swap for professionals who need dependable runtime without paying OEM premiums. The single biggest reason to buy is simple: it delivers the stated 7.2V 2700mAH Ni-MH capacity in a brand-new, warranty-backed pack that is explicitly compatible with a long list of EF-Johnson and Motorola models, so crews replacing worn cells can expect straightforward fit and predictable performance.

Key Features

• Capacity: The 2700mAH Ni-MH cell provides extended run time compared with smaller packs, reducing how often you need to swap batteries during a shift.
• Compatibility: Labeled compatible with EF-Johnson 51-FIRE-ES and many Motorola and Icom models, it avoids fitment guesswork for mixed fleet users.
• Quality: Sold as brand new and premium quality, the pack targets reliable discharge behavior typical of Ni-MH chemistry under typical radio loads.
• Warranty: A 12 month warranty gives practical protection against early failures and reassures buyers replacing mission-critical batteries.
• Replacement P/N mapping: The included replacement part numbers simplify cross-referencing for service departments and spare parts catalogs.

Who It's For

This battery is aimed at field technicians, industrial staff, and public safety teams who operate EF-Johnson 51-FIRE-ES radios or compatible Motorola/Icom handsets and need a cost-effective replacement that matches the original pack's voltage and form factor. It is also a good choice for facilities consolidating spares across multiple radio models thanks to the broad compatibility list.

Those who should look elsewhere include users who require lithium chemistry for lighter weight and longer calendar life or buyers who need manufacturer-specific branding and original packaging for asset tracking; in those cases an OEM pack may better meet administrative or lifecycle requirements.

Pros & Cons

Pros

• Strong stated capacity of 2700mAH gives longer operating time between charges compared with lower-capacity alternatives.
• Wide compatibility list reduces the risk of ordering the wrong battery for mixed fleets and simplifies inventory management.
• The included 12 month warranty provides practical reassurance for commercial use.

Cons

• Ni-MH chemistry is heavier and has a shorter calendar life than modern lithium alternatives, which may be a limitation for some users.

Specifications

Chemistry	Ni-MH
Voltage	7.2V
Capacity	2700mAH
Warranty	12 months
Compatible Models	EF-Johnson 51-FIRE-ES, 5100 series, Motorola MTP/XTS series, Icom IC-U81T
Replacement Part Numbers	587-5100-360, 587-5100-361, 587-5100-362 and others listed

Our Verdict

The Cut-Rate Batteries 7.2V 2700mAH Ni-MH pack is a pragmatic replacement for teams using EF-Johnson 51-FIRE-ES radios and compatible Motorola/Icom units who want reliable runtime and easy cross-referencing. It represents good value for organizations that prioritize cost, compatibility, and an included 12 month warranty over the lighter weight and longer-lived chemistry of lithium alternatives.

Frequently Asked Questions

Will this battery fit my EF-Johnson 51-FIRE-ES radio?
Yes, it is listed as compatible with the EF-Johnson 51-FIRE-ES and related 5100 series models and should fit the same battery compartment and connectors.

How long is the warranty?
The battery includes a 12 month warranty from the date of shipment to protect against early defects.

Is this a new or refurbished pack?
The product is sold as brand new, premium quality, not refurbished, and is designed to meet the stated capacity and compatibility claims.