Product Description Hills batteries 6GFM-12 Series - Valve Regulated Sealed Lead Acid Battery Features: 1. Safety performance: No electrolyte leakage under normal use, no cell expansion and rupture. (2) the discharge performance: the discharge voltage balance, discharge platform gently. 3 good resistance to shock: fully charged battery is completely fixed to 4mm amplitude, 16.7Hz vibration frequency of 1 hour, no overnight, no cell expansion and rupture, normal open circuit voltage. 4 good impact resistance: fully charged battery from 20cm height naturally fall to 1cm thick hardwood board 3 times. No overnight, no cell expansion and rupture, normal open circuit voltage. 5 Good resistance to overdischarge: 25 degrees Celsius, the battery is fully charged state constant resistance discharge three weeks (resistance value is equivalent to the battery discharge 1CA resistance), recovery capacity of more than 75%. 6 Good resistance to overcharge: 25 degrees Celsius, the fully charged state of the battery charge 0.1CA 48 hours, no overnight, no cell expansion and cracking, open circuit voltage is normal, the capacity to maintain the rate at 95%. 7 good resistance to high current: fully charged battery discharges five minutes or 10CA 2CA discharge for 5 seconds. No conductive part of the fuse, without the appearance of deformation. Model Voltage (V) Capacity (AH) Weight (KG) Dimensions (mm) LxWxH Total Height 6GFM7 12 7 2.7 151 65 94 101 6GFM17 12 17 5.6 180 77 167 167 6GFM24 12 24 7.5 165 125 175 180 6GFM38 12 38 14.5 197 165 175 180 6GFM65 12 65 21 350 166 175 175 6GFM100 12 100 30 407 173 210 236 6GFM150 12 150 42 483 170 239 240 6GFM200 12 200 55 522 240 219 244 Hills batteries long life battery sealed lead-acid battery charging method capacity and life are governed by the charging voltage, ambient temperature and other parameters, so the use of such cells is an important principle must be the correct charging method. Charging method depends on battery status, there are usually two states, namely recycling CYCLICUSE (as the main power source) and float use FLOAT USE (as a backup power), see table below corresponding charging method (table C is the battery rated capacity) Applications recycled float charging method using constant voltage charging 12V battery charging voltage range :14.5-14 .9 V initial current (A): ≤ 0.3C, 0.1C most 12V battery charging voltage range :13.6-13 .8 V 2V battery: 2.23-2.38V Initial current (A): ≤ 0.3C, 0.1C best charging voltage above table refers to an ambient temperature of 25 ℃ conditions, when there is a greater change in the ambient temperature, the charging voltage should be adjusted accordingly, is: ambient temperature is increased by 1 ℃, the charging voltage is reduced 0.003V / single cell ambient temperature decreasing by 1 ℃, the charging voltage increases 0.003V / single cell, such as temperature changes by more than 10 ℃, but not fixed float voltage may cause the battery damage, preferably at 20-25 ℃ the battery is installed in the air within the room. Note: sealed lead acid battery rated voltage single cell is 2V, 12V battery is composed of six single cells in series.