Maintenance for SP series Batteries 1. The operating temperature: Discharging -35℃ ~50℃ Charging -15℃ ~40℃ Storage -15℃ ~40℃ 2. Preventive maintenance to increase the battery life: The recommended maintenance and charging schedule when not in continuous use: △ The storage temperature range:-15℃~40℃, the humidity range: 25%-85%. △ Fully charge the batteries before storage; if not, battery life will be shorter. △ Use the batteries on a first-come basis, as batteries gradually deteriorate even under proper storage conditions. Batteries stored for over long periods may not restore to their initial capacity even after recharging. △ Batteries under storage at ambient temperature of25℃should be recharged every six months to maintain their quality, performance and reliability. The interval of this charge should be reduced to 50% by each10℃rise in temperature above25℃. △ Charge the batteries based on storage temperatures, as follows: <20℃(68℉) storage: charge every 9 months 20℃~30℃(68℉-86℉) storage: charge every 6 months 30℃~40℃(86℉~104℉) storage: charge every 3 months Recharge method: To charge with constant voltage of 2.4 ~2.5V/cell and initial current of 0.3CA and total duration of 5 ~ 8 hours. 3. Maximum temperature the battery can withstand:60℃ 4. When the battery is operated at temperature of45℃, its discharge capacity will be increased and recharge time needed may be shortened. However, the rate of side reaction (water decomposition) will also be increased, and the electrolyte will be dry out earlier. 5. Some environment friendly aspects are listed as follows: (1) Absolutely maintenance free. No water addition required. No acid spilling and no release of acid vapors. (2) Non-hazardous material allows to be transported by air, sea or rail transportation. (3) Sealed gel battery ensures safety and reliability. (4) Electrolyte will not stratify, allow efficient recharge.
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