Can I Use a Higher Mah Battery in My Cordless Phone

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Does mAh rating of a battery touch on the device at the same rated voltage?

Word in 'Power Electronics' started by patkim, October 23, 2018.

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1. I have a Panasonic Cordless phone. Its batteries went expressionless after almost ii years and I bought a new set of batteries from an online shopping site. The originals were i.2v 600mAh pair whereas the newer ones were one.2v 800mAh pair.

   A few days down the line the brandish failed and I took it to the service eye. The engineer said this has happened because of new batteries having college mAh rating that the original ones.

   I am under the impression that for the same rated voltage mAh rating simply defines the elapsing how long the battery can supply electric current. So ane.2V 800mAh shall last longer than one.2V 600mAh for the same load.

   Is my understanding correct? Are there any further complexities or caveats that exist in this scenario that a layman similar me is not aware?

   Thanks and regards.

2. The "engineer" is making excuses.

3. Yes, your agreement is correct. The larger mAh just means information technology volition terminal longer.
   The current that's depict is adamant by the phone load not the battery. Wither it's a 600mAh or a 800mAh battery it will still depict the aforementioned amr of current.

   The simply potential problem I could run into, is if the battery capacity was mode too big,and therefore made the charging circuit work beyond its intended duty. (Non shutting off/overheating)

4. These phones trickle charge the batteries, and overcharge them most of their life. You will get more lifespan out of them if you leave the phone off the charger base once information technology is fully charged.

   Low mAh cells were chosen because they tend to survive more than cycles and overcharge (and are cheaper towards that cease).

   I suppose it is possible that newer model phones take changed that, now have a proper charger excursion merely I doubt it as long as they stay with NiCd and NiMH.

   This trickle charging is as well relevant to your prior mail nigh what the right accuse voltage would be, considering it would bladder well to a higher place iii.0V because the PSU DC input voltage is limited by a resistor and would float college than 3.0V depending on the load on it on the charging circuit and how drained the bombardment is if connected and charging.

   Your display died for some other reason, depending on how it failed. Most likely the phone was dropped dissentious the connectedness to the display.

   I don't understand this "take information technology to the service center"? Panasonic warranties for only ane year which it is long past, and it can't be worth the time to take information technology somewhere and pay parts and labor now. I also doubt that y'all talked to a (real) engineer.

   Yous land that the brandish failed merely does the phone work otherwise? If at that place is some kind of internal short circuit that could impale your battery life.

   Information technology might be time for a new phone.

5. Brandish died naturally! I did non do anything specific. The but co-relation I take is it happened a while subsequently replacing the batteries. While the phone had only 1 year warranty, I took information technology to the service eye to get an idea of extent of the result considering except for display the phone was working simply fine. It was capable of making and receiving calls.

   Later charging me for minimal inspection charges they said that it requires full PCB replacement as display is integrated with PCB and that would cost me almost lxxx% of the price of new phone. So you are right, it's fourth dimension for a new phone.

   When I handed over the phone to them, their engineer opened the battery cabinet and inspected the batteries first earlier me and made that statement after looking at 800mAh rating.

6. Nitpick. I am not maxim this caused your problem.

   You cannot always replace a battery with a higher chapters battery and have information technology work correctly.

   I replaced NiCd batteries in a drill driver with NiMH of higher capacity, only it did not work because the new batteries could not supply the needed current.

   Bob

7. Bob is absolutely correct, and IMHO, it's not a nitpick. I thing no one asked nonetheless is, what kind of batteries (NiCd? NiMH?) did your phone have originally, and did yous supercede them with the same kind of batteries? If you lot replaced NiCd with NiMH, and then they won't charge properly, regardless of mAh rating.
   forty years ago, if it physically fit, so information technology was probably uniform. Those days are long gone.

   If y'all would proper name the model number of your Panasonic cordless phone and/or the model number(s) on your original and replacement batteries, we could give you improve communication. Details matter!

   Also, bold both sets of batteries were NiCd, decades ago I used to piece of work with NiCd-based ability supplies for small units comparable to cordless phones, and I seem to call up that we couldn't just raise the mAh rating of the standby batteries without upgrading the ability supply/changing excursion to friction match, or they wouldn't charge properly. My industry, security alarm systems, eventually got abroad from NiCd batteries altogether (partly considering they were and then finicky virtually how the batteries had to friction match the charger).
   But my experience may be completely out of date. I'll exit that to the experts here.

   Final edited: Oct 26, 2018

8. ^ It may be somewhat of a nitpick in this particular instance. These phones most likely use a crude trickle charger, a wall wart (wall plug Air conditioning/DC adapter) somewhere between 6VDC and 12VDC, and so a resistor in series to accuse 3 ten AAA series cells.

9. Seriously!? Okay, my bad, I guess. I take no experience with cordless phones of any brand or model. I'm just surprised that any electronic device in this twenty-four hour period and age has that primitive a charging circuit. Apparently it works well enough, though.

   I take an old cordless telephone stored away somewhere (haven't had a state line in over 10 yrs). I might be curious enough to dig information technology up and take it apart to cheque out its charging excursion---if I can detect it.

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Source: https://www.electronicspoint.com/forums/threads/does-mah-rating-of-a-battery-affect-the-device-at-the-same-rated-voltage.290046/

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