1. You can now help support WorldwideDX when you shop on Amazon at no additional cost to you! Simply follow this Shop on Amazon link first and a portion of any purchase is sent to WorldwideDX to help with site costs.
    Dismiss Notice
Dismiss Notice
This forum does not allow a single user to have more than one username. If anyone wants to change their username contact an admin and it will be done. Multiple accounts belonging to the same member will be deleted without warning.

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

Discussion in 'Product Reviews' started by Wire Weasel, Jul 16, 2019.

  1. Wire Weasel

    Wire Weasel Senior Moment

    Joined:
    Dec 13, 2008
    Messages:
    2,812
    Likes Received:
    415
    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
     
    rabbiporkchop likes this.

  2. w9cll

    w9cll W9WDX Amateur Radio Club Member

    Joined:
    Jan 19, 2013
    Messages:
    4,309
    Likes Received:
    3,702
    Are you really getting 3000 mWh out of them?
     
    rabbiporkchop likes this.
  3. Wire Weasel

    Wire Weasel Senior Moment

    Joined:
    Dec 13, 2008
    Messages:
    2,812
    Likes Received:
    415
    Factory specs. I haven't gotten them yet per my post ;)
     
  4. w9cll

    w9cll W9WDX Amateur Radio Club Member

    Joined:
    Jan 19, 2013
    Messages:
    4,309
    Likes Received:
    3,702
    Sorry I missed that part
     
    Wire Weasel likes this.
  5. Mudfoot

    Mudfoot Elmer

    Joined:
    Jun 17, 2009
    Messages:
    10,870
    Likes Received:
    6,155
    I wouldn't trust those numbers at all, especially at that price. Yowsa!
     
  6. Captain Kilowatt

    Captain Kilowatt Professional Amateur
    Staff Member

    Joined:
    Apr 6, 2005
    Messages:
    16,668
    Likes Received:
    10,537
    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.
     
    DXman and Wire Weasel like this.
  7. Mudfoot

    Mudfoot Elmer

    Joined:
    Jun 17, 2009
    Messages:
    10,870
    Likes Received:
    6,155
    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.
     
    DXman and Captain Kilowatt like this.
  8. rabbiporkchop

    rabbiporkchop Sr. Member

    Joined:
    Jan 18, 2007
    Messages:
    1,830
    Likes Received:
    748
    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.
     
  9. Wire Weasel

    Wire Weasel Senior Moment

    Joined:
    Dec 13, 2008
    Messages:
    2,812
    Likes Received:
    415
    rabbiporkchop likes this.
  10. Mudfoot

    Mudfoot Elmer

    Joined:
    Jun 17, 2009
    Messages:
    10,870
    Likes Received:
    6,155
    Might have been out of stock. Sellers raise the price to keep people from buying. They do it to save insertion fees.
     
    Shadetree Mechanic likes this.
  11. sunbulls

    sunbulls Sr. Member

    Joined:
    Apr 25, 2017
    Messages:
    847
    Likes Received:
    1,504
    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
     
    Wire Weasel likes this.
  12. Wire Weasel

    Wire Weasel Senior Moment

    Joined:
    Dec 13, 2008
    Messages:
    2,812
    Likes Received:
    415
    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.
     
  13. DXman

    DXman Yes, that's 3100 degrees F. Nine yrs of hard work.

    Joined:
    Apr 5, 2005
    Messages:
    1,640
    Likes Received:
    847
    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.
     
    #13 DXman, Jul 25, 2019
    Last edited: Jul 25, 2019
    Wire Weasel likes this.
  14. DXman

    DXman Yes, that's 3100 degrees F. Nine yrs of hard work.

    Joined:
    Apr 5, 2005
    Messages:
    1,640
    Likes Received:
    847
    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!
     
    #14 DXman, Jul 25, 2019
    Last edited: Jul 25, 2019
    Wire Weasel likes this.
  15. DXman

    DXman Yes, that's 3100 degrees F. Nine yrs of hard work.

    Joined:
    Apr 5, 2005
    Messages:
    1,640
    Likes Received:
    847

Share This Page

  • About Us

    The WorldwideDX Radio Forum was originally established in 2001. We pride ourselves on welcoming Radio Hobby enthusiasts of all types, while offering unbiased, informative, and friendly discussion among the members. We are working every day to make sure our community is the best Radio Hobbyist's site.
  • Like us on Facebook

  • Premium VIP Member

    The management works very hard to make sure the community is running the best software, best designs, and all the other bells and whistles. Care to buy us a beer? We'd really appreciate it!

    Donate to us!