We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Rectangular Ni-MH battery pack with three-prong connector

MPF Products

MPF Products 3700mAh 300-03866 LCP500-4B Battery alarm system

SKU CH-S1M5-307H6

7.2V 3700mAh Ni-MH rechargeable battery pack replaces 300-03866 and LCP500-4B in Honeywell Lynx 5100, 5200, 5210 and Touch 7000 alarm systems

  • TypeWindow & Door Alarms
  • Extended backup power with 3700mAh Ni-MH capacity
  • Direct fit for Honeywell Lynx 5100, 5200, 5210, 7000 panels
  • Replaces OEM part numbers 300-03866 and LCP500-4B
  • 2V 26.64Wh rechargeable pack ensures reliable operation
  • Free installation tool included for quick setup

Replacement Battery for Honeywell Lynx Panels

This 3700mAh Ni-MH pack replaces the original 300-03866 and LCP500-4B batteries used in Honeywell Lynx 5100, 5200, 5210 and Lynx Touch 7000 security alarm systems. It delivers 7.2 volts and 26.64 watt-hours of rechargeable backup power. A three-prong connector matches the factory wiring exactly.

Connector and Voltage Constraints

The pack uses a proprietary three-prong plug that only fits the listed Lynx control panels; it cannot be adapted to other alarm brands or to two-pin battery leads. The fixed 7.2-volt output is set for the panel’s charging circuit, so substituting a different voltage will prevent proper charging or trigger a fault.

Capacity Decides Fit

The 3700mAh rating determines how long the system runs during a mains outage; panels that originally shipped with a lower-capacity cell will gain longer backup time, while those requiring a higher rating will fall short. Verify the original part number 300-03866 or LCP500-4B before ordering.

Highlights

  • Extended backup power with 3700mAh Ni-MH capacity
  • Direct fit for Honeywell Lynx 5100, 5200, 5210, 7000 panels
  • Replaces OEM part numbers 300-03866 and LCP500-4B
  • 2V 26.64Wh rechargeable pack ensures reliable operation
  • Free installation tool included for quick setup

Specifications

TypeWindow & Door Alarms

Questions about this item

Should I pick the 300-03866 or the LCP500-4B version for my Lynx 5200?

Both part numbers refer to the same 7.2 V 3700 mAh Ni-MH pack with a three-prong connector, so either one fits the Lynx 5200.

What does the 3700 mAh rating actually give me once the battery is installed in a Lynx Touch 7000?

It provides 26.64 Wh of backup capacity, keeping the panel running during mains loss for the duration the system was designed to support.

What connector standard does the pack use and what does that limit?

The three-prong connector matches the Lynx 5100, 5200, 5210 and Touch 7000, so the pack only works with panels that accept that exact plug.

Also in this aisle

People compared these

Same shelf, same checkout — eight coins and a 30-minute rate lock.