NYI Upgraded 3800mAh 7.2V Battery for Honeywell Lynx Systems

In this review the NYI upgraded 3800mAh 7.2V battery is evaluated as a direct replacement for Honeywell alarm panels such as the Lynx 5100, 5200 and Lynx Touch 7000. The bottom line: this pack is for homeowners or installers who need a higher-capacity, drop-in replacement with the standard 3-prong connector and safety protections; the single biggest reason to buy is the increased 3800mAh capacity and the battery's PTC and short-circuit protections that help preserve the alarm panel's runtime and safety under real-world conditions.

Key Features

• Compatibility: Designed to match Honeywell part numbers including 300-03866 and LCP500-4B so users can replace the original pack without modification.
• Higher Capacity: The 3800mAh Ni-MH chemistry offers longer backup runtime compared with many stock packs, helping systems stay powered during extended outages.
• Safety Protections: Temperature-sensitive design with double short-circuit protection and PTC protection reduces failure risk when installed in alarm enclosures.
• Correct Connector: Ships with the required 3-prong battery connector, which ensures a proper fit for Lynx and Lyric controllers without adapter parts.
• Tested Reliability: Each pack is tested on professional equipment to confirm consistent performance and longer service life for security applications.

Who It's For

This battery is well suited to homeowners, small business owners, and alarm technicians who maintain Honeywell Lynx series and Lyric control panels and need a dependable replacement with higher capacity. It is particularly useful where longer alarm system runtime is desired during power outages or where the original pack has degraded.

Users who should look elsewhere include those with alarm models that do not use a 7.2V Ni-MH pack or a 3-prong connector; always check the existing part number and connector type before purchasing to avoid mismatch problems.

Pros & Cons

Pros

• Higher 3800mAh capacity provides extended backup time compared with lower-capacity replacements.
• Built-in safety measures such as PTC and short-circuit protection increase installation safety.
• Compatible with a wide range of Honeywell part numbers, making it a convenient drop-in swap for many Lynx and Lyric panels.

Cons

• Requires verification of part number and 3-prong connector type before purchase to ensure fit; not universal for all alarm models.

Specifications

Battery Voltage	7.2V
Capacity	3800mAh
Chemistry	Ni-MH battery pack
Connector Type	3-prong
Compatible Part Numbers	300-03866, LCP500-4B, LYNXRCHKIT-SHA, OSA214
Compatible Models	Lynx 5100, 5200, 5210, Lynx Touch 7000, Lyric Controller

Our Verdict

The NYI 3800mAh 7.2V replacement is a sensible value for anyone maintaining Honeywell Lynx or Lyric alarm systems who needs longer backup runtime and enhanced safety features. It delivers reliable, tested performance when the correct part number and 3-prong connector match the existing installation, making it a practical upgrade over lower-capacity packs.

Frequently Asked Questions

Will this battery fit my Lynx 5200?
It will fit if your existing pack uses a 7.2V Ni-MH battery with a 3-prong connector and matches compatible part numbers such as 300-03866.

What safety features does it include?
The pack is temperature-sensitive, double short-circuit-proof and includes PTC protection to reduce risk of failure in alarm systems.

Is this a genuine OEM pack?
This is an NYI upgraded replacement designed to be compatible with Honeywell part numbers and tested for consistent performance, not an original manufacturer labeled pack.