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Wool Dryer Balls, Set of 6Reusable wool balls that separate laundry in the tumble dryer and replace single-use dryer sheets.

Household
Low self-discharge AA batteries that hold their charge for months between uses. They make most sense in devices you use often and that get through batteries quickly, like game controllers, remote-controlled toys, torches and fairy lights. For smoke alarms and low-drain devices like clocks, Which? recommends sticking with disposables.
Not on sale yet — we’re still researching products and confirming suppliers.
Your savings, honestly explained
~£1 per recharge
Which? estimates that each recharge saves about £1 you would otherwise spend on a disposable battery, and that in power-hungry devices rechargeables pay for themselves — including the charger and electricity — after about 10 charge cycles. Disposable battery prices have changed since that 2022 article. Your yearly saving depends entirely on how many batteries you get through, so we don’t give a yearly figure.
Figures are for Great Britain unless stated. We cite this guidance independently — these organisations haven’t tested, approved or endorsed this product or our shop.
No reliable figureHousehold
Wool Dryer Balls, Set of 6Reusable wool balls that separate laundry in the tumble dryer and replace single-use dryer sheets.
No reliable figureHousehold
Beeswax Food Wraps, 3-PackReusable wraps for covering bowls, cheese, bread and halved fruit instead of cling film.