For those who are entirely off-grid, Kingspan offers the following types of battery as a part of our complete off-grid system:
Lead acid battery
A key factor to consider with a Lead Acid Battery is the deeper the battery gets discharged on a daily basis, the less cycles it will achieve through its expected lifespan. How to eliminate this concern and ensure you are getting the maximum number of cycles and efficiency from the battery is to size the battery system so that your average daily demand never takes the discharge below 50%. Where you are using a Lead Acid Battery on a grid inverter system, the inverter will ensure the discharge rate is maintained not to drop below this threshold.
Lead Acid remains the most cost effective as the capital investment is considerably cheaper than an alternative battery.
Lithium Ion Battery
The main benefit to Lithium Ion Batteries is their ability to discharge up to 100% of the stated capacity which makes them a better option for those who have a high or fast energy usage and the battery are likely to be discharged quickly.
An additional benefit is they are very low maintenance compared to an alternative battery; however, the additional upfront capital cost is higher. A Lithium Ion battery is lighter with less space required for housing.
Salt Water Battery
A Salt Water Battery contains no heavy metals or toxic chemicals; they are also non-flammable and non-explosive, making them amongst the safest in the world. This type of battery is designed for stationary long-duration daily cycling applications such as off grid, micro-grid and domestic applications.
They are easily connected in series or parallel. Wide operating temperature range and a high cycle life are two of the main benefits of this type of battery.