12V 1.2Ah Rechargeable Lead Acid Battery is normally use for robots in competition. Wired or Wireless Robots runs for a long time with high speed with this type of battery. Seal Lead Acid (SLA) Rechargeable battery is the most common general purpose battery.
Low cost, robust and less maintenance required are the advantages of SLA. But it is considered heavy weight for certain robotic application. To charge SLA batteries, you can use any general DC power supply as long as it provides the correct voltage to your battery.
No Memory Effect
Able to use for most of the 12V controllers, motors or any other appliances
Size: 98mm x 43mm x 52 mm
1 x 12V 1.2Ah Rechargeable Lead Acid Battery
Note: image is just for size reference , company of battery may change.