Description For DE35 DE38 DE40 DE50 Specification:Voltage:3.7V;Capacity:500mAh Product Number :14500 Safety Warning: 1. Never use or charge the battery that has ballooned or swelled, leaks, overheat or anything else abnormal occurs. 2. Do not discharge the batteries with the current exceeding the max discharging current. Otherwise, it will lead to batteries overheat and result in battery deterioration, burst, balloon or may even cause fire or explosion. 3. Never disassemble, puncture, shock or crash the lipo battery. Never put the battery into fire. 4. Never overcharge the battery, improper use, such as short circuit or overcharge might cause explosion or fire. 5. Never immerse in sea water or salt water, or will endanger battery performance and battery life.