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Upcoming Review: Kentli AA & AAA Rechargeable Li-Io Batt's & Chgr.

Wire Weasel

Senior Moment
Dec 13, 2008
2,820
438
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Hi gang, Rechargeable 9V Li-ions have been around a few years and in 2018 I believe, a company called Kentli out of China has produced them in AA & AAA's. Have purchased the below set (4 AA, 4 AAA & charger) on eBay today for $46.39 / free ship via the slow boat. Will probably take around a month to come in. Have good reviews on Amazon. More product offerings and a bit cheaper on eBay. Will put through the paces and review when they come in. Should be the AA & AAA thing of the future as they get cheaper in time. Anybody in the group already use these?
The AA are 3000ma, AAA 1,2000ma

https://www.ebay.com/itm/1-5v-Rechargeable-Li-ion-battery-for-cameras-4-AA-4-AAA-4-slots-Smart-Charger/273130007620?ssPageName=STRK:MEBIDX:IT&_trksid=p2057872.m2749.l2649
 
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Captain Kilowatt

Professional Amateur
Staff member
Apr 6, 2005
16,732
10,715
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Nova Scotia,Canada
Several years ago I bought a bunch of AA nickel/metal hydride batteries for my MFJ-269 antenna analyzer. There were 2700mA/hr and take FOREVER to charge up in the analyzer due to the capacity and the low trickle rate of charge. They last almost forever in it however. I forget the brand name but they were a regular off-the-shelf brand. Expen$ive at the time but worth it IMHO.
 

Mudfoot

Elmer
Jun 17, 2009
10,870
6,162
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Southeast Ohio
I use Maha and Bonai. My Maha charger holds 6 AA and AAA. Works really well. Batteries hold up good.

My first Maha charger went poof about 6 years ago. I bought it off ebay, but Maha swapped it out. It was way out of warranty too. Good service.
 

rabbiporkchop

Sr. Member
Jan 18, 2007
1,830
756
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pennsylvania
Cramming a 3.7 volt Lipo cell into an AA enclosure, and sticking a 3.7 volt to 1.5 volt regulator inside was a stroke of genius. The only catch is a proprietary charger is needed to bypass the 1.5v regulator.
 

Mudfoot

Elmer
Jun 17, 2009
10,870
6,162
698
60
Southeast Ohio
Something of an update ... LOL
I have no idea wft is going on but - I did in fact pay $46.39 for this set. The next day the seller Revised the ad and is now asking $110.99 for the same thing ... Ha! Good luck to the fuckahs selling any at that price :eek:
https://www.ebay.com/itm/1-5v-Rechargeable-Li-ion-battery-for-cameras-4-AA-4-AAA-4-slots-Smart-Charger/273130007620?ssPageName=STRK:MEBIDX:IT&_trksid=p2057872.m2749.l2649

Might have been out of stock. Sellers raise the price to keep people from buying. They do it to save insertion fees.
 
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sunbulls

Sr. Member
Apr 25, 2017
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I’ve seen mixed reviews at this early date. On the plus side they provide a stable 1.5 volts, but fall off a cliff suddenly without warning. Others complain they get hot when used with high current drain equipment. NiMH batteries don’t have that heat issue under heavy load. You might be surprised about China’s shipping time. They usually overestimate to cover themselves on E-bay. I receive most of my purchases from China in about 2 weeks or less. In my case it usually takes approximately a week to arrive in Cal and another week to go across country
 
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Wire Weasel

Senior Moment
Dec 13, 2008
2,820
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I've had the same results from China too. 2-5 weeks. - And that's the way Li-Io's work. Typical full output and then sudden die-off.
 

DXman

Yes, that's 3100 degrees F. Nine yrs of hard work.
Apr 5, 2005
1,641
860
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West Coast - Washington
It looks like they do have a circuit at the bottom, but it doesn't say if it is a "protected circuit", this is on the battery I am talking about.
I have 16 Lithium batteries for my flashlight's, they are of the 18650 size and all have the protected circuit. Having a good charger is very important.

Be cautious when charging, always stay close until charging has stopped.

I know my NiMH batteries have severed me well for many years, as of now I have 90 of the LSD type 2400 mAh and some are now on their 7th year.

I also use a Maha CS9000 charger for the NiMh - have two of them.

But the Lithium AA sounds like a good deal, hope they work good for you, will be watching.
 
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DXman

Yes, that's 3100 degrees F. Nine yrs of hard work.
Apr 5, 2005
1,641
860
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West Coast - Washington
Being curious - I done some checking on the AA and from the company's website it did say that there is a "protected circuit" built in.

So that is good, I am going to do some more searching now. It appears they are 2000 mAh.

Many thanks for the heads up!
 
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Help Users
  • @ ButtFuzz:
    on the connector with the green wire, if you short that to a nearby black wire, the power supply will turn on. (for use as a bench supply or whatever)
  • @ ButtFuzz:
    And IIRC, the purple wire is -12VDC, but that is from memory and it does not serve.
  • @ ButtFuzz:
    So if you need, say, 7v, connect + to the Yellow wire and - to the Red wire.
  • @ ButtFuzz:
    or or you need 9v connect + to the yellow wire and - to the orange wire. note: not all PSU's have the orange wire nowadays, as many manufactures had the voltage regulation on the motherboard, and all the power supply gives is 12 vdc
  • @ BJ radionut:
    Thanks ROB will check it out!~!! got to clean the work bench a little make room for that big case :)