If you are planning to have an off-grid energy system (for many reasons), a power bank would be the next requirement.
No we are not talking about the hot selling portable power banks that you use to charge your mobile phones and other devices. Power bank is my nick name for a large battery that can store the power generated from the off-grid energy system.
So this would be a power bank for your house, office, factory etc…
There are 3 types of batteries recommended for this purpose:
- Golf Cart Batteries
- Industrial or Forklift Batteries
- L16 Batteries
Let me justify why the above 3 batteries are recommended to act as the battery bank for your off grid energy system, be it solar, wind, bio fuel etc..
Golf Cart Batteries
These are widely manufactured, thus making it easily available to be used as battery banks. Even though they have a short life span of 5 to 6 years, they can be easily reconditioned for prolonged use. You would of course, have to use more than one battery simultaneously to save up all the power generated, otherwise it wouldn’t make sense.
Industrial or Forklift Batteries
An industrial or forklift battery is more powerful and holds more energy than many golf cart batteries combined. They come in different sizes, so it would be a challenge to find one that fit’s your size requirement.
You don’t need a significant investment for this battery if you intend to purchase an old forklift battery that you can easily refurbish following any of the popular battery reconditioning guides on the internet.
They are hard to move around but their durability speaks value.
Lead Acid L16 batteries are for the mid-budget individuals who want something more than a golf cart battery but find an industrial battery to be going overboard.
These are built to last 6 to 8 years on average and the 6 volt models can be expensive but highly useful.
Now that you have an idea about the top 3 recommended batteries that can be used as a power bank hold energy produced from your off-grid energy system, let’s talk budget friendly options.
Budget Friendly Option 1
- Get old or dead batteries for free or dirt cheap.
- Recondition these batteries back to 100% up time. Use this guide if you need help.
- Use them.
That’s it. There are no other options that I could wholeheartedly suggest.
Your intention to build an off-grid energy system is to save money in the first place. It doesn’t make sense to spend large amounts of money on batteries when cheap and effective alternatives exist.