Professional sony lithium ion battery design for flashlight

The basic parameters of this CR2050W battery are as follows: 3V345mAh, size is 20*5.0mm, temperature is -40~125°C. From the Discharge characteristics below, you can see how the battery operates at the same load and at different temperatures. When used at an ambient temperature of -20 ° C, the voltage is 3.0 V, and the voltage drops with increasing capacity. When the capacity reaches 100 mAh, the voltage drops to 2.8 V. When the capacity reaches 200 mAh, the voltage drops to 2.75 V. When the capacity reaches 300 mAh, the voltage drops to 2.5 V, and as the capacity increases, the voltage continues to drop until the voltage discharge ends. When used at an ambient temperature of 60 ° C, the voltage is 3.05V, the voltage drops with the increase of capacity, when the capacity reaches 100mAh, the voltage drops to 2.98V, when the capacity reaches 200mAh, the voltage drops to 2.95V, when When the capacity reaches 300 mAh, the voltage drops to 2.8V, and as the capacity increases, the voltage continues to drop until the voltage discharge ends. When used at an ambient temperature of 100 ° C, the voltage is 3.1 V, the voltage decreases with increasing capacity. When the capacity reaches 200 mAh, the voltage drops to 3 V. When the capacity reaches 300 mAh, the voltage drops to 2.8 V. The increase in capacity continues to drop until the end of the voltage discharge.