Perhaps you are the garrulous type who like to gab on the phone for hours at a time; or work in a small business or office with a busy phone line; or maybe even an absent-minded type who never remembers to out the phone back on charge. Whatever your need for a Cordless Phone with a long battery life, you’ll find what you’re looking for in this definitive list of the best cordless phones of 2015 that keep on going.

5. Siemens Gigaset SL910A

SL910A-1Battery type: Li-Ion 1000mAh          liGo Price: £128.99

  • Talk-time claimed by manufacturer: 14 hours
  • Standby time claimed by manufacturer: 200+ hours
  • Talk-time in liGo test: 12 hours
  • Standby time in liGo test: 8 days

Number 5 on our list of the best DECT phones for battery life is the eye-catchingly stylish Gigaset SL910A. A premium top-of-the-range model with a sleek metal finish and large user-friendly touchscreen for an elegant look and feel. Made in Germany, the SL910A is designed to provide performance to match its style; the talk-time fell a couple of hours short of Gigaset's claims but 12 hours continuous use on such a high-spec phone is still impressive and should be enough to get you through the day. When left untouched (the screen was activated at the start and end of each working day) the battery level declined over the course of a week, reaching critical level on day 7 and powering off completely the following morning.

So, if you’re looking for a high-end digital cordless phone that will comfortably last a full day of solid use then the SL910A is a reliable choice. Find out more & order online here.


4. Panasonic KX-TGH 220

Battery type: 2x AAA NiMH 550mAh          liGo Price: £38.99

  • KX-TGH220Talk-time claimed by manufacturer: 14 hours
  • Standby time claimed by manufacturer: 200+ hours
  • Talk-time: 13 hours
  • Standby time: 8 days

Next on our list is one of Panasonic’s latest DECT offerings the KX-TGH220, which was only released earlier this year. Panasonic's claim for the length of battery life for this model was the same as claimed by Gigaset for the SL910A, however, we found that the KX-TGH220 fared marginally better in our tests for talk-time lasting a whole extra hour! Standby time was the same - the handset was checked at the beginning and end of each day, by the end of day 7 the battery was almost depleted and died a couple of hours after it was checked the following morning.

The Panasonic KX-TGH 220 is an easy to use landline phone that would be great for home use, thanks to features such as: Nuisance Call Blocking, Do Not Disturb Mode, and 30 minute answering machine. Find out more & order online here.


3. Panasonic KX-TG 6821

Battery type: 2x AAA NiMH 550 mAh          liGo Price: £29.99

  • KX-TG6821Talk-time claimed by manufacturer: 18 hours
  • Standby time claimed by manufacturer: 150 hours
  • Talk-time in liGo test: 18.5 hours
  • Standby time in liGo test: 7 days

At No. 3 we have Panasonic’s budget friendly KX-TG 6821, which excelled in our battery life tests for talk-time (lasting longer than the claims made by the manufacturer). The standby time was not quite as impressive but still made it to the end of the week, so won't cause you any major problems if it slips your mind to put it back on charge for a couple of days.

It might not have some of the features of the TX-TGH220 but the 6821 is just as easy to use and offers excellent value for money at only £29.99. Read customer reviews & full spec here.


2. BT 8500

BT8500 Cordless PhoneBattery type: 2x AAA NiMH 750mAh          liGo Price: £49.99

  • Talk-time claimed by manufacturer: 21 hours
  • Standby time: 240 hours
  • Talk-time in liGo test: 21 hours
  • Standby time in liGo test: 9 days

BT’s newest cordless phone - the Nuisance Call Blocking BT 8500 has also made it onto the list to take the No.2 spot with an advertised battery life that was pretty much spot on. The handset made it comfortably through a 12 hour session of continuous talk-time on day 1 and lasted a further 9 hours the following day before giving up the ghost. On standby it lasted a full week before the battery started to deplete, and powered down half-way through day 9.

Aside from battery life, one of the main advantages of the BT 8500 is nuisance call blocking (powered by trueCall) with Guardian Call Screening. You can find out what our customers think & read more about the phone here.


1. Gigaset C620A

Battery type: 2x AA NiMH 1200mAh          liGo Price: £43.99

  • Talk-time claimed by manufacturer: 26 hours
  • C620AStandby time claimed by manufacturer: 530 hours
  • Talk-time in liGo test: 24 hours
  • Standby time in liGo test: 3 weeks

The resounding winner of our tests and the crowning top-spot goes to another entry from Gigaset – the C620A – with a whopping talk-time that spanned over 2 days of testing 24 hours talk-time, and delayed publishing of the article due to an impressive standby time of 3 weeks. If long battery life is the most important feature that you’re looking for in a new phone then the C620A should be your top choice.

It’s also equipped with a range of useful features to take advantage of including Call Blocking, a 55 minute digital answering machine, large user-friendly colour display, and Gigaset’s signature HSP sound protocols for excellent call clarity. You can order the Gigaset C620A and read the full spec along with customer reviews here.

Some battery life 'best practice'

To ensure that you get the best battery performance from your cordless phones it is important that when using a new phone (or replacement batteries) for the first time, that you allow them to fully charge and then run down completely before charging them a second time. Doing this once a month can prolong the life of rechargeable batteries, however, to get the best out of your phones we would recommend replacing the batteries every couple of years. You can find out about recycling batteries and our take-back scheme for WEEE here.