Fei Chang-purpose heat source supply 7.4v4400mah lithium products detailed description: ⑴ Model: FCY-III ⑵ specification: 7.4V / 4400mAH ⑶ charging voltage: DC8.4-8.6V / 1200MA; ⑷ overcharge protection voltage: 8.6- 8.7V ⑸ over-discharge protection voltage: 2.5-6.0V ⑹ when charging "1" ↗ "nine." digital display along the voltage increases incrementally displayed when "9" is flashing, indicating that the battery pack is fully charged; the discharge When, when "1" flashes to indicate the battery pack to give the boot ⑺ Press ON / OFF button, LED displays the current battery charge. "a." - "9" ⑻ battery to discharge heated electric clothing ; LED display position "1" - "5" and the battery pack "one." - "nine.", switching between display ⑼ pulsed output current, output power stability ⑽ load type and scope: pure resistance. anti, 4Ω-100Ω; ⑾ Operating Current: <15mA; ⑿ Standby current: <0.5mA; ⒀ Output Power: 15W MAX; ⒁ power output efficiency; ≥98%; three, digital display the corresponding value: ⑴ 1st gear: LED show "1": The battery power output 30%, equivalent to 3.9V; ⑵ 2nd gear: LED display "2": The battery power output of 45%, equivalent to 4.7V; ⑶ 3rd gear: LED display "3": Battery power output of 60%, equivalent to 5.6V; ⑷ 4th gear: LED display "4": Battery power output: 80%, equivalent to 6.4V; ⑸ 5th gear: LED display "5": The battery power output of 100% equivalent to 7.2V. ① LED display "1": The battery is ≥5%, the equivalent of 5.3-5.7V; ② LED display "2": The battery is ≥8%, the equivalent of 5.7-6.0V; ③ LED display "3. ": The battery is ≥10%, the equivalent of 6.0-6.4V; ④ LED display" 4 ": The battery is ≥15%, the equivalent of 6.4-6.7V; ⑤ LED display" 5 ": The battery is ≥ 20%, the equivalent of 6.7-7.0V; ⑥ LED display "6": The battery is ≥30%, the equivalent of 7.0-7.4V; ⑦ LED display "7": The battery is ≥50%, equivalent to 7.4 -7.8V; ⑧ LED display "8": The battery is ≥70%, the equivalent of 7.8-8.2V; ⑨ LED display "9": The battery is ≥85%, the equivalent of 8.2-8.6V; four, Note: ⑴ can not connect the battery / motor / load capacitance ⑵ charge at the specified charger ⑶ not heat played 60 ℃ (140 ℉) ⑷ not withdraw open, you can not short-circuit, away from the fire, away from water ⑸ treatment. When will explode in a fire.