HQRP Battery compatible with Ademco Honeywell LYNX LYNXRCHKITHC LYNXRCHKIT-HC K5109 781410403291 55026089 WALYNX-RCHB-SC WALYNXRCHBSC LYNXRCHKIT-SC Replacement plus HQRP Coaster

Works well, been installed for a month so far so good.

Replaced a Red SAFT 7.2v NiCD battery pack. Plug is identical, but this battery pack was thicker by 3mm, and wider by around 5mm. This did not allow retaining clamp to seat, nor for cover to snap back on. I imagine the 600mah NiCD pack would be slightly smaller than a 2200mah nimh pack, but these are advertised as direct replacements. Esp considering theyre all supposedly built with AA batteries.I ordered a different model battery from same brand with lower mah rating and a ni-cd chemistry to see if that one will fit.Battery seemed top notch, but buyer beware these are not direct replacement fit in older units that had ni-cd battery packs and no spare room in holder

Battery fit perfectly in an Ademco Lynx panel, but after only 20 months I'm getting a low battery warning. Should have lasted longer than that. The battery that came with the panel when new lasted about 10 years before dying.

After watching a Youtube video on how to install these, I bought one and installed it in my home security system control pad. Easy to install, and does what it's supposed to do.

Despite every other review saying this product was shipped out after it was out of date, it is still getting shipped out. The one I received was 5 years, yes years, out of date