[Healeys] off topic rechargeable battery query

[Per Schoerner]

Hi
Presumably there are 4 1.5 Volt cells in the phone that are connected in series. 4 * 1.5 = 6, voila.

Per


----- Ursprungligt meddelande -----
Från: Bob Spidell
Skickat: 2015-06-04 16:40
Till: healeys at autox.team.net
Ämne: Re: [Healeys] off topic rechargeable battery query

The mAH is a rating of how much current the battery can supply for how long:

 'milli Amp Hour'

 Get the highest rated you can find/afford; though the rating on the Chinese knock-offs--I think most of them are--seems to be overstated.  The load--how much current will be used--is determined by the circuit on the phone.

 The statement on the charger makes no sense; applying 6V to a 1.5V battery would cook it in short order (putting 48V on a car battery would boil the electrolyte; creating a major mess and possibly an explosion).  I suspect it's a nominal rating; i.e. it will put out 150mAH at 6v, but only needs about, oh, 2V or less to charge the batteries and would supply 450mAH at that voltage.

 E (voltage) = I (current) * R (resistance).  Plug in any 2 known values--and use a little algebra if necessary--and you'll get the third.

 Bob




On 6/4/2015 7:03 AM, Simon Lachlan wrote:


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The string on 1.5v recharging demonstrated that some of you gurus are multitalented(sp?). So............

The batteries in our domestic cordless phones are giving up.

They are AAA Nickel Metal Hydride 550mAh.

Looking on eBay, most similar rechargeable AAA phone batteries are around 1500mAh. Nothing less than 700mAh.

Can I stick in the highest rated that I can find, 1800mAh, and expect good results? Or does the higher mAh level imply some level of something that the phones’ chargers won’t manage???

(The charger says “Output: 6v. 150mAh”)

Simon
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