Includes 7.4V 2200mAh (16.28Wh) rechargeable lithium-ion battery *1pack Battery Size: 1.6*2.8 inch, cable length 2 inch, weight 94g, Compatible with Honeywell Alarm Lynx WALYNX-RCHB-SC Honeywell Lynx Touch K5109, L3000, L5000, L5100, L7000, 2Gig BATT1, BATT1X, BATT2X, 6MR2000AAY4Z, GC2 2GIG-CNTRL2 2GIG-CP2, GCKIT311, 228844, Go Control Panel Alarm System 10-000013-001, PERS-4200 Certified quality: Each lithium battery pass safety examination before they leave the facotry. They must pass UN38.3 test standards such as low-high temperature test, impact test, over charging, external short circuit, vibration test etc. It will lower down the risk caused by accident to minumum in production, shipping and your using period. Life time warranty: Every battery from us is of guaranteed quality for life-time. If you have any probelms with the product (caused by product itself), please contact with us for replacement or refund any time. We provide 100% quality product and after sales service all the time.