Battery styles: 1. Colloid battery serial(12v), 2. Sealed lead-acid maintenance free battery serial (2v), 3. Sealed lead-acid maintenance free battery(6v12V)

Sealed lead-acid maintenance free battery serial product feacture:
1. Completely maintenance free
2. Can't balance charge
3. Long time to use, expect life time are 10-15 years
4. Low self-discharge
5. Uniform voltage can be kept among battery
6. Quick starting touch and go
7. Convenient for transportation