Currently, solar battery prices in the UK cost anywhere between £2,500 and £10,000 depending on the battery capacity, type of battery and lifespan. A typical 5 kilowatt hour (kWh) solar battery, suitable for a three-bedroom house, costs £5,000, on average.
A lithium-ion battery can cost £3,500 to £6,000 depending on its usable capacity (kWh). On the other hand, lead-acid batteries can only discharge 50% of the total amount of storage which means that they are available at comparatively cheaper prices. A lead-acid battery can cost around £2,000 to £4,500 depending on its usable capacity (kWh).
There are four main types of solar battery storage systems available in the market to choose from according to space, usage, output, and cost. These are as follows: RV/Marine Solar batteries. Flooded type batteries. Gel batteries. Absorbed Glass matte (AGM) batteries.
Utilised in lithium-ion batteries, the most common type of battery for solar storage. The cost of lithium is influenced by its growing demand and limited supply. Prices can be volatile. Used in the cathode of lithium-ion batteries.
The battery's life cycle and discharge rate can actually make or break the cost of your solar system. Here's the scoop: A long-life battery might pinch a bit more at first - but in the long haul, it can be better bang for your buck. The overall cost changes once you get a reliable battery in there. Sources:
Usable capability – The usable capacity of a storage battery is not how much electricity it can store, but how much of a battery’s total capacity you can actually use. A battery’s capacity can be misleading, as you shouldn’t typically use a battery’s entire capacity, otherwise you run the risk of damaging it.