Different Battery Chemistries

All recommendations are for building GNOR race boats. You may use this as a guide for other projects.

Listed bellow are a few of the common battery chemistries that you may use to power your boat. Some of these are much more recommend than others but this will cover all of the common ones. 

Lithium

Please read up on the following topics if you intend on using ANY lithium battery chemistries:

Lithium Polymer (Lipo) [Recommended]

LiPo

Lithium Polymer batteries are the most recommended for the boat race. These batteries are available for relatively low prices from Amazon and even local hobby retailers.

Lipo batteries are very power dense compared to their cousins, meaning per unit mass they can output much more energy at one time. This leads them to be really good for small scale high output electronics applications like the boat project. 

Pros and Cons

Pros:

  • Easy to find
  • High power output
  • Come with many different common battery connectors

Cons:

  • Easy to damage
  • Heavier than some other lithium chemistries

Common form factors

Lipo batteries are found in the form of pouch cells, these cells are soft sided and easy to damage so be careful when using them. 

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Battery voltage

Each cell will run around 4.2v when fully charged and 3.7v when at 80% DOD.

Battery packs

 When searching for Lipo battery packs you will want to use a battery power calculator to determine the capacity you will need. You will also want to look at the maximum voltage of your motor to determine the number of cells you need in a battery pack.

 Hard Sided Packs: these are great because you get an extra layer of protection