# Ring SmartCharge 8A Battery Charger & Maintainer

Source: https://www.ranked10.co.uk/tech/best-car-battery-chargers/ring-smartcharge-8a
Ranked #9 in "Best Car Battery Charger 2026: 10 Ranked, and Two Share a Model Number": https://www.ranked10.co.uk/tech/best-car-battery-chargers

- Price: £39.38 (checked on Amazon UK on 2026-09-17)
- Amazon rating: 4.4 from 150 ratings
- Buy on Amazon: https://www.amazon.co.uk/dp/B0CV4D5V6H?tag=ranked10-21

The RING SmartCharge 8A sits at number 9 in this guide, and what puts it there is the price rather than the review count: 4.4 out of 5 from 150 ratings. The interesting part is inside RING's own range. The 8-amp SmartCharge is listed at £39.38, while RING's 6-amp SmartCharge is listed at £39.98 — 60p less for two more amps.

As a product, it is a charge-and-maintain box for lithium ion, lead acid, gel, calcium, EFB and AGM batteries, with a cold weather mode, long crocodile-clip cables and a claim that it restores batteries from as low as 1 Volt. The spec table also quotes a 1-hour charge time and compatibility with vehicles running 12V or 24V batteries, even though the output voltage in the same table is 12 Volts (DC). Everything on this page comes from the Amazon listing, not from testing we carried out.

## Specification

| Field | Value |
|---|---|
| Price | £39.38 |
| Rating | 4.4 out of 5, from 150 ratings |
| Current Rating | 8 Amps |
| Input / Output Voltage | 240 Volts in, 12 Volts (DC) out |
| Battery Charge Time | 1 Hours (as listed) |
| Compatible Devices | Vehicles with 12V or 24V batteries (as listed) |
| Star breakdown | 100 ratings shown in the histogram of the 150 claimed, of which 66 are 5-star |
| Best Sellers Rank | 10 in Car Battery Charging Units |

## Questions people ask

**How much does the RING SmartCharge 8A cost?**

The listing shows £39.38. RING's own 6-amp SmartCharge is listed at £39.98, so the 8-amp unit is 60p cheaper for two more amps.

**What batteries can the RING SmartCharge 8A charge?**

The listing names lithium ion, lead acid, gel, calcium, EFB and AGM batteries, and the spec table claims compatibility with vehicles using 12V or 24V batteries, even though the output voltage in that same table is 12 Volts (DC).

**Can the RING SmartCharge 8A revive a flat battery?**

The listing says it charges and restores batteries from as low as 1 Volt, and the item highlights repeat that 1 Volt figure.

**How long does the RING SmartCharge 8A take to charge?**

The spec table gives a battery charge time of 1 hour. That is the listing's own figure, not something we measured.

**What rating does the RING SmartCharge 8A have?**

4.4 out of 5 from 150 ratings. The star histogram only accounts for 100 of those: 66 five-star, 22 four-star, 6 three-star, 1 two-star and 5 one-star.

**What is in the box with the RING SmartCharge 8A?**

The listing gives the box contents as the clamps and the smart charger body, and lists crocodile clips as the connector type.