
This battery series is specially designed for pre-school aged electronic learning toys. They feature a small size, low resistance, and long standby period.
| Model | Capacity(≥mAh) | Thickness (±0.2mm) | Width (±0.5mm) | Length (±0.5mm) | Internal resistance(≤mΩ) | 
| 502535 | 400 | 4.8 | 25 | 35 | 80 | 
| 552248 | 600 | 5.3 | 22 | 48 | 80 | 
| 602030 | 300 | 5.8 | 20 | 30 | 100 | 
| 603040 | 600 | 5.8 | 30 | 40 | 80 | 
| 702040 | 500 | 6.8 | 20 | 40 | 100 | 
| 902030 | 500 | 8.8 | 20 | 30 | 100 | 
| There are over 50 kinds of models with different specifications and capacities designed for preschool electronic learning toys. | |||||
