Fogstar Battery Installers in Scotland

RB Grant supply and install a range of batteries and equipment from Fogstar Energy.

Fogstar are the UK’s number one battery retailer and supply a multi award wining range of high performance lithium batteries.

1. Company Overview

Fogstar Ltd is a privately owned UK company founded in November 2016, headquartered in Birmingham, with operational roots in Redditch, Worcestershire. The company was established to tackle the widespread issue of counterfeit lithium battery cells in the UK market and has since grown into one of the most recognisable lithium battery suppliers in the country.

Fogstar primarily operates as an online retailer and manufacturer‑branded supplier of lithium-ion and LiFePO₄ (Lithium Iron Phosphate) batteries for:

Home energy storage
Solar PV systems
Off‑grid and backup power
Leisure vehicles (motorhomes, boats)
DIY battery builders and installers

The company remains unfunded, growing organically without venture capital backing. [tracxn.com]

2. Financial & Business Health

Fogstar is a financially stable private firm by UK SME standards:

Active and trading since 2016
Estimated annual revenue around $19m (£15m) (modelled)
Cash reserves reported at ~£2 million
Total assets of approximately £3 million
Workforce of around 10–12 employees, growing steadily year‑on‑year

The business shows low financial risk, positive working capital, and consistent asset growth, indicating a sustainable operating model rather than aggressive expansion. [

3. Product Range & Technology

Fogstar’s portfolio is wide and technically credible:

Core Product Lines

DIY lithium cells (18650, 21700, prismatic)
Fogstar Drift leisure batteries (LiFePO₄, IP67 rated)
Rack‑mount home energy storage systems (5–15.5 kWh modules)
Standalone 48V solar batteries
Chargers, BMS hardware, cables, and accessories

They predominantly use Grade‑A LiFePO₄ cells, often sourced from EVE Energy, a major global battery cell manufacturer.

Most products offer:

4,000+ cycle life claims
10‑year warranties (depending on product)
Modular expansion capability
Competitive £/kWh pricing compared to Tesla, GivEnergy, and Fox ESS

4. Real‑World Performance & Reliability

Independent long‑term user data is a major strength for Fogstar. A 3‑year owner review (2023–2026) of a 15kWh Fogstar Energy rack battery shows:

~10% capacity degradation after ~800 cycles
On track to retain 80%+ capacity at 10 years
Stable BMS performance following firmware updates
[solarenerg…epts.co.uk]

This performance aligns closely with premium home battery systems costing significantly more per kWh.

5. Customer Reputation & Support

Fogstar has an exceptionally strong customer reputation on Trustpilot:

4.6–4.9 / 5 rating
900+ verified reviews
90%+ five‑star ratings
100% response rate to negative feedback
Typical response time: under 24 hours

Common Praise:

Knowledgeable technical staff
Honest pre‑sales advice
Excellent after‑sales support
High product value for money

Recurring Criticisms:

Battery configuration software described as “basic” or poorly translated
Documentation sometimes incomplete for advanced installs
Occasional packaging or logistics issues (minority of cases)

6. Competitive Position

Fogstar is best described as a high‑value alternative to premium brands, rather than a direct competitor to Tesla or Enphase on polish and ecosystem integration.

Strength vs Competitors