The Panasonic valve regulated lead-acid battery trickle long life series was developed by studying and analyzing the factors which caused deterioration of conventional batteries in various aspects. The safety and reliability of these batteries has been greatly improved through the adoption of flameretardant resins. (For 7.2Ah to 33Ah, 94HB-equivalent resin is standard; 94V-0-equivalent resins are also suitable).
Much longer trickle life compared with conventional batteries was achieved with the battery footprint unchanged. Expected trickle life of 6-9 years in a range from 1.3 to 33 Ah