Cut-Rate Batteries Battery Compatible with EF-Johnson 5100 ES - 7.5V

In this review of the Cut-Rate Batteries replacement for the EF-Johnson 5100 ES radio, the bottom line is simple: this is a straightforward, high-capacity Ni-MH swap for users who need reliable runtime without the OEM price. The reviewer found the battery best for active radio users and fleets that want a like-for-like fit and a long service life, since it delivers 7.5V and 3600mAH in a compact pack and is backed by a 12 month warranty. If compatibility with a wide range of Motorola and EF-Johnson models matters, this pack is worth considering.

Key Features

• 7.5V 3600mAH Ni-MH: Provides extended run time for radios used across long shifts or continuous operations, reducing mid-shift swaps.
• Premium quality, brand new: Arrives as a new pack rather than a refurbished unit, which helps ensure expected capacity and reliability from first use.
• Wide compatibility: Designed to fit EF-Johnson 5100 ES and many Motorola models, simplifying inventory for technicians and fleets.
• 12 month warranty: Offers a full year of coverage against defects, which gives practical reassurance for professional use.
• OEM replacement P/N coverage: Lists many original part numbers it replaces, making it easier to confirm fit for older or service radios.

Who It's For

This battery is best for radio users who need a reliable replacement for EF-Johnson 5100 ES style packs and for organizations that maintain mixed fleets of Motorola and EF-Johnson radios. Field technicians, event staff, security teams, and public safety support crews who require a 3600mAH capacity will appreciate the longer runtime compared with lower-capacity cells.

Those who should look elsewhere include users who demand manufacturer-branded cells with proprietary support or those who need lithium chemistry for significant weight savings; this is a Ni-MH pack intended to match OEM electrical fit and runtime rather than to be the lightest option available.

Pros & Cons

Pros

• High capacity 3600mAH rating extends operating time between charges for demanding use.
• Confirmed compatibility with many Motorola and EF-Johnson models simplifies replacements.
• Comes new with a 12 month warranty, which reduces risk for commercial buyers.

Cons

• Being a Ni-MH pack, it is heavier than comparable lithium packs and may slightly increase radio weight.
• Does not cite specialized fast-charge circuitry; charge times will follow standard Ni-MH behavior.

Specifications

Our Verdict

The Cut-Rate Batteries 7.5V 3600mAH Ni-MH pack is a practical, cost-conscious replacement for EF-Johnson 5100 ES style radios and many Motorola handsets. It delivers solid runtime, broad compatibility, and the safety net of a 12 month warranty, making it a sensible buy for crews and technicians who need dependable battery performance without OEM premiums.

Frequently Asked Questions

Will this battery fit my EF-Johnson 5100 ES radio?
Yes, it is built to be compatible with the EF-Johnson 5100 ES form factor and electrical specifications listed by the seller.

How long does the warranty cover the battery?
The battery is covered for 12 months from the date of shipment against manufacturing defects.

Is this a new or refurbished unit?
This product is sold as brand new and premium quality, not refurbished.