Choice of Battery for Line Follower Robots

As normally line follower robot is small in size and need to accelerate quickly the choice of battery is very important . The size of the battery need to be small and the weight need to be very low. The power storage of the battery needs to be high.

Rechargable Battery :

 As the bot needs to run again and again choosing a rechargeable battery will be sensible. Two types of rechargeable battery can be used.

1. Lithium-ion battery
Mobile phone battery can be used. One mobile phone battery gives 3.7 v. Connecting them is series gives higher voltage and connecting them in paraller gives higher backup. The energy capacity is rated in mAh rating . Higher the mAh rating higher is the storage capacity and higher is the backup.

2.Lithium polymer battery:
Lithium-ion polymer batteries, polymer lithium ion or more commonly lithium polymer batteries (abbreviated Li-poly, Li-Pol, LiPo, LIP, PLI or LiP) are rechargeable (secondary cell) batteries. LiPo batteries are usually composed of several identical secondary cells in parallel to increase the discharge current capability, and are often available in series "packs" to increase the total available voltage.
Before using them just learn the safety precaution. They explode in high temperature. They need to be charged using controlled charger.

 



Non Rechargeable Battery :
If some one wishes to use non rechargeable battery then 9v Duracell batteries can be used.

My experience:

I used mobile phone batteries in series in my robot. They gave good backup, low weight and seize make it convenient and also good life time.