Skip advert
Advertisement

Battery conditioners

If you have a second car that rarely gets used, a trickle charger is ideal for maintaining the battery's power. We put six to the test

Flat batteries are the bane of owning a classic car or infrequently used second motor. Leave the vehicle idle for a few weeks, and just when you need it there's the dreaded click as you turn the key.

The solution is to keep the battery topped up with a trickle charger, ensuring immobilisers and the like won't run it down while the car sits in the garage. There's a wide choice on the market, but which leads the charge for top honours?

Verdict

At £50, the CTEK 36 is the most expensive product on test, but it combines three charging modes in a unit that can work as a reviver and a conditioner.
The Accumate and Airflow performed well, with the former narrowly securing second position - although these chargers are more geared to conditioning only.

Skip advert
Advertisement

New & used car deals

Volkswagen Tiguan

Volkswagen Tiguan

RRP £37,230Avg. savings £3,063 off RRP*Used from £14,910
MG MG4

MG MG4

RRP £27,005Avg. savings £7,778 off RRP*Used from £11,890
Renault Clio

Renault Clio

RRP £16,160Avg. savings £3,970 off RRP*Used from £8,795
Kia Sportage

Kia Sportage

RRP £28,065Avg. savings £3,153 off RRP*Used from £15,600
* Average savings are calculated daily based on the best dealer prices on Auto Express vs manufacturer RRP
Skip advert
Advertisement

Most Popular

New Geely EX5 SUV to arrive in October, starting at £32k
Geely EX5 - front

New Geely EX5 SUV to arrive in October, starting at £32k

This new electric SUV is coming soon to the UK from Volvo and Lotus parent company, Geely
News
15 Sep 2025
Nissan Qashqai to finally go electric, but hybrid model will remain
Nissan Qashqai electric render Avarvarii - front 3/4

Nissan Qashqai to finally go electric, but hybrid model will remain

There will be an overlap of powertrains for the big-selling SUV
News
15 Sep 2025
Car Deal of the Day: Savour the Scandi cool of a Polestar 4 at only £334 a month
Polestar 4 - cornering, low shot

Car Deal of the Day: Savour the Scandi cool of a Polestar 4 at only £334 a month

Fancy something smart and sophisticated? You won’t look back with the Polestar 4. It’s our Deal of the Day for September 13
News
13 Sep 2025