Deep Dives

Longer pieces on sizing, payback, technology and the questions homeowners keep asking us, regularly updated with our latest research so you are working from current numbers, not last year's.

Independent & unbiased
Updated regularly
No sales pitch

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Surge Power and Motor Loads: Why a Battery System Can Trip on Startup

Motors in fridges, pumps and heat pumps draw a short burst of current when they start. Here is why it matters for battery backup and how to read surge ratings.

31/07/2026

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Home Battery Warranties and Cycle Counts Explained

What a home battery warranty promises: years, cycles, throughput and retained capacity. How cycles are counted and what to check before you buy.

28/07/2026

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How a Home Battery Knows How Full It Is: State of Charge Explained

A home battery has no fuel gauge, so state of charge is estimated. Here is how it works, why LFP is harder to read, and what usable capacity means for you.

25/07/2026

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AC-Coupled Versus DC-Coupled Home Batteries: How the Energy Flows

AC and DC coupling describe where a battery connects to your solar system. Here is how each path converts power, and why it matters for retrofits and losses.

23/07/2026

Close-up of a meter dial reading kWh with a row of digits

Smart Meters, Half-Hourly Settlement and What They Mean for Home Batteries

Great Britain is moving every meter to half-hourly settlement by May 2027. What that is, who it affects and why it matters if you own or plan a home battery.

20/07/2026

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Round-Trip Efficiency Explained: How Much Energy Does a Home Battery Give Back?

Round-trip efficiency is the share of stored energy a battery returns. How it is measured, where losses occur and what it means for your savings.

17/07/2026

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AI Smart Charging Explained for Home Batteries

AI smart charging optimizes battery usage based on local grid rules, tariff structures, and dynamic electricity prices.

14/07/2026

Home Batteries Explained: Do You Really Need One?

Home batteries hold daytime solar surplus for evening use, helping reduce energy bills and increase self-consumption.

14/07/2026

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High-Voltage Versus Low-Voltage Home Batteries: What Actually Changes

High-voltage and low-voltage home batteries differ in current, cabling and inverter pairing. Here is the physics, what to ask and which claims to doubt.

11/07/2026