# NOCO GENIUS2X4 8A 4-Bank Smart Battery Charger

Source: https://www.ranked10.co.uk/tech/best-car-battery-chargers/noco-genius2x4-4-bank-charger
Ranked #7 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: £165.00 (checked on Amazon UK on 2026-09-17)
- Amazon rating: 4.7 from 1,754 ratings
- Buy on Amazon: https://www.amazon.co.uk/dp/B08FYS6CL8?tag=ranked10-21

No other pick in this guide charges four batteries at once, and no other pick costs £165.00. The NOCO GENIUS2X4 is a four-bank charger: one unit, four outputs, four sets of cables and four pairs of needle-nose clamps, priced at £165.00 with a 4.7 rating from 1,754 ratings. It sits at #7 here, which is where a charger that does four batteries at once tends to land when most buyers only need to keep one topped up.

The number worth checking is the one in the name. The 8A in the title is total output across four banks, not per battery — the same title says "2A/Bank", so each battery on this unit receives a quarter of what the headline figure suggests, and the listing's own reviews describe the charge as gentle. That is not automatically a fault for a maintainer designed to be left connected, but it is a real difference from the single-output chargers ranked above it. Two other entries in the same spec panel are harder to square: "Battery Charge Time: 1 Hours" is listed with no battery capacity attached to it, and "Connector Types: USB" sits alongside box contents that mention only charging cables and needle-nose battery clamps. Everything on this page comes from the Amazon listing, not from testing we have carried out.

## Specification

| Field | Value |
|---|---|
| Price | £165.00 |
| Amazon rating | 4.7 out of 5, from 1,754 ratings |
| Output | 8 Amps total across 4 banks (2 Amps per bank, as listed) |
| Banks / ports | 4 |
| Battery charge time (as listed) | 1 Hours |
| Connector types (as listed) | USB |
| Input voltage | 240 Volts |
| Item weight | 3.53 kg |

## Questions people ask

**Is the NOCO GENIUS2X4 an 8-amp charger?**

The listing headline says 8A, and the same title qualifies it as 2A per bank. Four batteries therefore share that 8 amps rather than each receiving it.

**What batteries will it charge?**

The listing covers 6-volt and 12-volt lead-acid batteries (AGM, EFB, Gel, SLA, VRLA, Start-Stop) and lithium-ion LiFePO4, including flooded, maintenance-free, deep-cycle, marine and powersport batteries.

**Can it charge a completely flat battery?**

The listing says the NOCO GENIUS2X4 charges batteries from as low as 1 volt, and that Force Mode is for manually charging completely dead batteries down to zero volts.

**Does it charge four batteries in one hour?**

The spec panel lists "Battery Charge Time: 1 Hours". The listing gives no battery capacity alongside that figure, so it does not say what size of battery the hour refers to.

**The title mentions 6V, but the spec table says Output Voltage is 12 Volts. Which is it?**

The headline and the compatibility list both cover 6-volt and 12-volt batteries, while the spec table lists only "Output Voltage: 12 Volts". The listing leaves that difference unexplained.

**Can I leave batteries connected to it?**

Yes. The listing states the charger monitors the battery constantly and can be left connected indefinitely for maintenance without overcharging.