GEILIENERGY 7.2V 3700mAh Replacement Battery for Lynx Panels - Higher

In this review the GEILIENERGY 7.2V 3700mAh replacement battery is evaluated as a direct backup power upgrade for Honeywell Lynx alarm systems. The bottom line: this battery is aimed at homeowners and installers who need reliable post-outage runtime and an easy drop-in fit. It replaces older lower-capacity packs and promises up to about 24 hours of standby power for the Lynx Plus panel and GSM module, which is the single biggest reason to consider it as a replacement for the original pack.

Key Features

• Higher capacity: The 3700mAh rating provides longer backup runtime compared with older packs, which helps keep the system powered through extended outages.
• Direct compatibility: The pack is built to fit Lynx 5100, 5200, 5210 and Lynx Touch 7000 systems so installation is straightforward for those models.
• Standard connector: A 3-pin connector matches the panel harness, allowing an easy swap without adapter cables.
• Quality cell construction: The pack uses six NiMH cells assembled as 4/3A x 6 which provides stable chemistry for alarm backup use.
• Compact dimensions: At approximately 110 x 68 x 17.2mm the pack fits inside the original battery compartment used by Lynx systems.

Who It's For

This replacement battery suits homeowners, small-business owners, and alarm installers maintaining Honeywell Lynx and Lyric keypad systems who want longer backup runtime and direct compatibility without modifying the panel. It is also useful for anyone replacing an aging or failing rechargeable battery that shows backup power errors, as customers reported that swapping to this pack often resolved those errors.

Customers who have non-Lynx alarm models or require sealed lead-acid chemistry should look elsewhere; this pack is specifically NiMH and intended for the Lynx family. Large commercial alarm installations that require regulatory-specified batteries or central power solutions should consider specialized commercial batteries instead.

Pros & Cons

Pros

• Higher capacity than the original pack, delivering extended backup time for panels and GSM modules.
• Fits directly into Lynx 5100/5200/5210 and Lynx Touch 7000 systems, reducing installation time.
• Reported to charge quickly and resolve backup power warnings after installation.
• Uses NiMH cells that are a common, safe chemistry for portable backup packs.

Cons

• NiMH chemistry means it is bulkier than some modern lithium alternatives and may offer lower energy density.
• Compatibility is limited to Lynx and related models; it is not a universal alarm battery.

Specifications

Voltage	7.2V
Capacity	3700mAh
Cell type	NiMH (6 pcs of 4/3A x 6)
Connector	3-pin connector
Dimensions	110 x 68 x 17.2mm
Replaces	P/N 300-03864-1 / LYNXRCHKIT-SC with higher capacity P/N 300-03866 / LYNXRCHKIT-SHA
Compatible models	Honeywell Lynx 5100, 5200, 5210, Lynx Touch 7000, Lyric Controller, LCP500-L

Our Verdict

The GEILIENERGY 7.2V 3700mAh is a practical, cost-effective replacement for Lynx and Lyric keypad systems for anyone needing improved backup runtime and a hassle-free fit. It offers tangible value for home and small-business alarm setups by resolving backup power issues and delivering longer standby time, though buyers wanting the smallest possible pack or different chemistry should consider alternate options.

Frequently Asked Questions

Will this battery fit my Lynx Touch 7000?
Yes. The pack is listed as compatible with Lynx Touch 7000 and other Lynx models that use the same battery compartment and 3-pin connector.

How long will the battery power my panel after a power outage?
Under normal standby conditions the higher 3700mAh capacity is intended to provide around 24 hours of backup for the Lynx Plus panel and GSM module, though actual runtime depends on installed accessories and load.

Does this require special wiring or adapters?
No. The battery uses a standard 3-pin connector matching the Lynx harness, so it installs without adapters in compatible systems.