The Power-Sonic Batteries PS-12180 NB 12 Volts 18 AH (main) and PS-1272 F2 12 Volts 7.2 AH (backup) both died today in my KR-2. Actually the backup probably died about 6 months ago; since it was never used by the system, I did not pay much attention. Only had them for 4 years and 6 months. From reading the Power-Sonic specs, I had thoroughly abused these batteries. The instructions for maintenance called out storage temperature limits and float charging requirements to keep these batteries going for a full life up to 4 years. Not to fear, BatteryPlex.com has replacements in UPS shipping right now.
Sid Wood Tri-gear KR-2 N6242 Mechanicsville, MD, USA
