BT Synergy 5500 Dect - replacement batteries

Has anybody replaced their rechargeables ?

Currently 550 mAh (AAA 1.2v, r/c 16hrs @ 55 ma/h)


Batts soon start bleeping into a call.
(and have cut the call off)


Did anybody have any success with say 700 mAh Ni-MH

Comments

  • Terry98
    Terry98 Posts: 1,155 Forumite
    Seventh Anniversary 1,000 Posts Combo Breaker
    The answer might be here

    '.....it seems that BT cordless phones are very fussy about what types of batteries can be used. We put in a call to BT’s Synergy Helpline on
    0800 145 6789 to be told that many rechargeable batteries don’t work and it’s important to buy the correct ones that are designed for the phones and with the correct power rating. Apparently only batteries rated between 550 and 750mAh will work – and they strongly recommended buying the correct replacements otherwise the phone may not work.'

    http://www.techanswers.org.uk/answers/rechargeable-batteries-in-bt-synergy-cordless-phones.html
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