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

Nissan Juke

Nissan Juke

RRP £19,785Avg. savings £4,638 off RRP*Used from £8,995
Dacia Spring

Dacia Spring

RRP £14,995Avg. savings £4,636 off RRP*
Nissan Qashqai

Nissan Qashqai

RRP £27,415Avg. savings £6,054 off RRP*Used from £9,995
Vauxhall Corsa

Vauxhall Corsa

RRP £19,690Avg. savings £5,308 off RRP*Used from £10,749
* Average savings are calculated daily based on the best dealer prices on Auto Express vs manufacturer RRP
Skip advert
Advertisement

Most Popular

Ford Puma is UK’s best-selling car once again and Brits prove their love for petrol power
Ford Puma - front corner left turn

Ford Puma is UK’s best-selling car once again and Brits prove their love for petrol power

More than 2,000,000 new cars were sold in the UK last year – the first time since the Covid-19 pandemic
News
6 Jan 2026
It’s clear that all buyers want are affordable and desirable cars
Affordable cars - opinion

It’s clear that all buyers want are affordable and desirable cars

Manufacturers like BYD, Jaecoo and Renault are building affordable cars people actually want to buy, and it’s backed up by sales data
Opinion
5 Jan 2026
New electric Mercedes S-Class will replace the EQS… eventually
Mercedes EQS - front tracking

New electric Mercedes S-Class will replace the EQS… eventually

The next iteration of the S-Class will give its affluent customers the choice of combustion or electric power
News
5 Jan 2026