Replacing phone batteries

[prof student]

Greetings.

Battery question for y'all....

So, my dad has a couple of Panasonic cordless phones that use AAA's, Ni-MH, 1.2V, min 630 mAh.

1)I was wondering, IFFFFF any kind of rechargeable batteries can be used? Do they HAVE to be Ni-MH?

2) Does he HAVE to purchase batteries that are identical to the OEM? Or can he, say, purchase AAA Duraloops to do the job?

3) IF he were to purchase Duraloops or the like, can he just pop them into the phone and have them charge IN the phone, using the phone base charging? Or, does he have to charge them in a respective charger AND THEN put them in the phone?

Thanks y'all for your assistance.

 

[march.brown]

Greetings.

Battery question for y'all....

So, my dad has a couple of Panasonic cordless phones that use AAA's, Ni-MH, 1.2V, min 630 mAh.

1)I was wondering, IFFFFF any kind of rechargeable batteries can be used? Do they HAVE to be Ni-MH?

2) Does he HAVE to purchase batteries that are identical to the OEM? Or can he, say, purchase AAA Duraloops to do the job?

3) IF he were to purchase Duraloops or the like, can he just pop them into the phone and have them charge IN the phone, using the phone base charging? Or, does he have to charge them in a respective charger AND THEN put them in the phone?

Thanks y'all for your assistance.

The batteries on my on my two old Panasonic cordless phones failed to hold their charge ... They were AAA low capacity NiMh , so I replaced them with Hybrios which were low self-discharge 800mAh NiMh batteries ... The phones were used with their original charger bases with no problems ... After a couple of years I bought a new set of 3 Panasonic Phones and gave the old ones to my Daughter ... That was over two years ago and the phones are still working OK ... I only bought the new set of phones because I wanted another one to put in the study.

So just put in good quality NiMh batteries and carry on as before.
.

 

[jasonck08]

Does the phone use bare AAA Ni-mh cells? If so any AAA Ni-mh cell will work, regardless of capacity. Duraloops/Eneloops would work great.

And yes, you'd want to stick with Ni-mh. You could use Ni-cd (don't know why you would want to) but IIRC a Ni-mh -dv termination is slightly different than Ni-cd's.

You wouldn't be able to use any other chemistry like Li-ion's without a serious modification.

 

[mvyrmnd]

If you use replacement cells, they will have to be NiMH AAA's, but they can be any brand. The phone will be designed to charge NiMH cells, so you could leave them in the phone just like the current ones.

 

[mvyrmnd]

Three replies in the same minute, all with the same answer. Not bad.

 

[Eismagier]

I'm using AAA Eneloops in my cordless phones. No problems so far. The manufacturer (Siemens in my case) recommends going through one full cycle (i.e. using the phone until the batteries are dead and then a full, uninterrupted charge) in order to calibrate the battery gauge.

 

[Battery Guy]

I too am using Eneloop AAA cells in my cordless phones. Although the capacity is only about 25% more than the Panasonic cells that came with the phone, I am amazed at how long the phone stays charged off the cradle. Yet another testament to the value of LSD NiMH cells.

 

[prof student]

Wow, so many answers & so quickly. Awesome.

So, is it correct that a battery, say Eneloops or Duraloops, who have their own charger, will charge just fine in the cordless phone?

If its a higher mAh, do you think it will charge to full capacity, or will the phone base be designed to charge to the capacity of the original batteries?

Thanks.

 

[mvyrmnd]

The phone will charge higher capacity batteries just fine, it'll just take longer to charge to 100%