Modern mobile phone battery life tends to be measured in hours rather than days, but one US manufacturer has just announced a model that can run for 15 years from a single AA battery.

It’s called the SpareOne and maker XPAL Power intends it for use as an emergency phone that’s always ready for action — no matter how long it’s been left idle (as long as it’s less than 15 years, obviously).

Modern mobile phone battery life tends to be measured in hours rather than days, but one US manufacturer has just announced a model that can run for 15 years from a single AA battery.

It’s called the SpareOne and maker XPAL Power intends it for use as an emergency phone that’s always ready for action — no matter how long it’s been left idle (as long as it’s less than 15 years, obviously).

The idea is that the SpareOne can be left in a car glove box or kitchen drawer without having to worry about the state of its battery — and since it runs of a standard AA, replacing a dead battery with a new one is still pretty easy.

Alan Cymberknoh, SpareOne Project Director at XPAL Power said: “SpareOne's breakthrough technology provides an unprecedented lifeline during dire situations that require an emergency response. By operating on a single AA battery, SpareOne solves so many daily issues, serving as a simple back-up phone you can carry without worrying whether it's charged or not.”

“It can be left in a car for emergencies, used by hotels who want to pre-program concierge numbers for guests, passed to your children or parents to maintain an open line of communication — it's essentially designed to make and receive the most important calls, no matter what.”

The SpareOne has a talk time of 10 hours and can automatically transmit location data via the mobile phone network, making it useful for rescue situations where there’s no obvious landmark information.

The SpareOne will be available in the US later this year for $50 (around £30), but it’s a standard GSM handset that uses a SIM card and XPAL Power does plan to offer it for sale in Europe.

Share with friends

Follow us on

Most recent motorhome reviews

The Practical Motorhome Mercedes-Benz Marco Polo 250d Sport Long review – 1 - The Mercedes-Benz Marco Polo 250d Sport Long is priced from £56,670 OTR, £63,990 as tested (© Phil Russell/Practical Motorhome)
The Practical Motorhome Chausson Welcome 711 Travel Line review – 1 - The new Chausson 711 is being sold in Welcome Travel Line spec only (© Peter Baber/Practical Motorhome)

Swift Rio 325

£52,180OTR

The Practical Motorhome Swift Rio 325 review – 1 - The 2018 Swift Rio 325 is just 5.99m long and has a licence-friendly MTPLM of 3500kg (© Phil Russell/Practical Motorhome)
The Practical Motorhome IH N-Class 630 RLS review – 1 - The IH N-Class 630 RLS is priced from £73,995 OTR for the 130bhp variant and from £76,490 OTR for the 180bhp version – we're testing the latter (© Gentleman Jack/Practical Motorhome)
The Practical Motorhome Marquis Majestic 196 review – 1 - Fitting six berths and six travel seats into a 3500kg motorhome is no mean feat – does it work? (© Phil Russell/Practical Motorhome)
The Practical Motorhome Swift Bessacarr 597 review – 1 - The ’van tested has an MTPLM of 3850kg, but there is a version with a 3500kg MTPLM (and a lower payload) – read more in our Swift Bessacarr 597 review (© Peter Baber/Practical Motorhome)