The 2025 battery has a maximum capacity of 2.2A.
The A23 has a capacity of 1.9A, and the B22 has a 3.4A rating.
The 2050 battery has 2.5A, the B20 has 2A and the A25 has 1.5Ah.
The A22, the 2050, the A23 and the 2025 batteries have a battery voltage of 1,000 volts.
The B21, B22 and B21 batteries have 1,500 volts.
For a full rundown on battery life, visit batterylife.com.