Figure 1. Battery view. 

 

Table 1. Declared characteristics.

Capacity 220 mAh
Nom. voltage  3.7 V
Min. voltage 3.0 V
Max. voltage  4.2 V
Resistance ? mOhm
Mass 7.5  g
Connector JST-PHR 2.0 plug   

 

 

Figure 2. Galvanostatic charge-discharge curves (22 mA) at room temperature. 

 

Figure 3. Galvanostatic charge-discharge curves (22 mA) at different temperatures. Charge is performed at room temperature.

 

Figure 1. LTO battery from China

Table 1. Declared characteristics.

Capacity 1500 mAh
Nom. voltage  2.4 V
Min. voltage 1.9 V
Max. voltage  2.8 V
Resistance 20 mOhm
Mass 39  g

 

Measured characteristics

 

Figure 1. Galvanostatic charge-discharge curves depending on current rate. At 2C polarization is ~0.2V, corresponding to ~70 mOhm. The capacity at 2C is less than 1400 mAh.

 

Figure 2. Galvanostatic discharge (150 mA) curves at different temperatures.