Fogstar Energy 15.5kWh 48V review: price and specs for Scottish homes
Last updated: 30 October 2026 · Reviewed by the Scottish Energy Efficiency team
Is the Fogstar Energy 15.5kWh 48V worth it in Scotland?
The Fogstar Energy 15.5kWh is usually the cheapest way to buy a lot of storage, with one of the lowest costs per kWh in the UK. It is a 48V rack battery from a UK company that works with many low-voltage inverters. The trade-off is an 8-year warranty, shorter than most rivals.
Specifications
| Specification | Fogstar Energy 15.5kWh 48V |
|---|---|
| Usable capacity per unit | 15.5kWh |
| Maximum system size | Parallel units possible |
| Continuous power | Set by inverter |
| Chemistry | LFP (48V) |
| Coupling | DC: DC 48V, works with many low-voltage hybrid inverters |
| Warranty | 8 years |
| Company | UK company |
| Voltage | 48V low voltage |
| Typical installed price (0% VAT) | Price on quote – typical 10kWh systems cost £5,500–£7,000 |
Specifications from manufacturer datasheets; prices checked October 2026.
Pros and cons
Pros
- Among the lowest costs per kWh
- Large 15.5kWh in one unit
- UK company
Cons
- 8-year warranty, shorter than most
- Rack-style unit needs floor space
- Low-voltage cabling needs careful installation
Who does the Fogstar Energy 15.5kWh 48V suit in Scotland?
It suits value-focused Scottish homes with high overnight usage, rural properties pairing it with a Sunsynk or similar inverter, and buyers who want maximum capacity for their budget. Owners who prioritise the longest warranty, or a sleek wall-mounted unit, may prefer a premium brand.
How much does the Fogstar Energy 15.5kWh 48V cost installed?
Installed prices for the Fogstar Energy 15.5kWh 48V are not widely published, so it is priced on quote. As a guide, typical 10kWh systems cost £5,500–£7,000 at 0% VAT, checked October 2026. Your figure depends on capacity, wiring and whether a compatible inverter is already fitted.
Compare with
Fogstar Energy 15.5kWh 48V FAQs
How much does a Fogstar battery cost installed?
Prices are on quote. Typical 10kWh systems cost £5,500–£7,000 installed at 0% VAT, checked October 2026, and Fogstar is usually among the lowest per kWh.
What inverters work with Fogstar?
Many 48V low-voltage hybrid inverters, including Sunsynk. Your installer will confirm compatibility.
How long is the Fogstar warranty?
8 years.