cory Posted September 24, 2013 Report Share Posted September 24, 2013 I just saw a post about these on the Facebooks. I thought that AA Lithium Rechargeable batteries at 1.5V were my white whale. Are they real? Why can I find almost no information about them?? Quote Link to comment Share on other sites More sharing options...
LarryF Posted September 24, 2013 Report Share Posted September 24, 2013 I just saw a post about these on the Facebooks. I thought that AA Lithium Rechargeable batteries at 1.5V were my white whale. Are they real? Why can I find almost no information about them?? Probably confused with 3.6 Volt lithiums that are close to AA in size. (I've been wrong before and recently.) Best, Larry F Lectro Quote Link to comment Share on other sites More sharing options...
LarryF Posted September 24, 2013 Report Share Posted September 24, 2013 Probably confused with 3.6 Volt lithiums that are close to AA in size. (I've been wrong before and recently.) Best, Larry F Lectro Web site says 1.5 Volt. Very little information. Sounds like it has an internal switching power supply to get down to 1.5 Volt. Strange. Capacity is liseted as 2800 mWh not mAh. Capacity is 2800 divided by 1.5 or 1867 mAh. Looking at a 2.5 Ah NiMh, at 1.2 Volt that is 3000 mWh. Looking at the side of the battery it lists 4.2 Volt which must be the charging voltage for an internal 3.6 Volt LiPo battery. The charge looks like it has a ring terminal that contacts the the gold ring at the top of the battery to get to the internal cell at 4.2 Volt. That ring is probably the 3.6 Volt port also. I'm not sure there is any big advantage over a regular NiMh. There chargers list 3 to 4 hours charging time which is comparable to the good NiMh chargers. Thanks Cory, for the original info. As I said "I've been wrong before and recently." Best, Larry F Lectro Quote Link to comment Share on other sites More sharing options...
studiomprd Posted September 24, 2013 Report Share Posted September 24, 2013 we are waiting to hear your results, Cory... Quote Link to comment Share on other sites More sharing options...
soundtrane Posted September 24, 2013 Report Share Posted September 24, 2013 Dear Larry, the photo on this page shows 760 mAh 3.7V - confirming your thoughts about a possible 3.6V Lipo? http://www.aliexpress.com/store/product/4Pcs-Set-AA-Rechargeable-Battery-1-5V-2800mwh-Rechargeable-Li-polymer-Battery-Free-Shipping/709169_742341900.html Quote Link to comment Share on other sites More sharing options...
Jon Gilbert Posted September 24, 2013 Report Share Posted September 24, 2013 3.7v LIon batts do come off the charger at around 4.2v Quote Link to comment Share on other sites More sharing options...
LarryF Posted September 24, 2013 Report Share Posted September 24, 2013 Dear Larry, the photo on this page shows 760 mAh 3.7V - confirming your thoughts about a possible 3.6V Lipo? http://www.aliexpress.com/store/product/4Pcs-Set-AA-Rechargeable-Battery-1-5V-2800mwh-Rechargeable-Li-polymer-Battery-Free-Shipping/709169_742341900.html Hi Vin, That's the web site I was referring to and it's about the only information I could Google or Bing. Best, Larry F Lectro Quote Link to comment Share on other sites More sharing options...
cory Posted September 25, 2013 Author Report Share Posted September 25, 2013 Does anyone here have these?? I'd be really really curious to know how they do in lectros... I think that one of the biggest hypothetical advantages over nickel metal is that lithium AAs would be affected a lot less by cold weather. Also, less of a "memory" so one should be able to recharge wthout waiting for full drain without risking the life of the battery. Quote Link to comment Share on other sites More sharing options...
LarryF Posted September 25, 2013 Report Share Posted September 25, 2013 Does anyone here have these?? I'd be really really curious to know how they do in lectros... I think that one of the biggest hypothetical advantages over nickel metal is that lithium AAs would be affected a lot less by cold weather. Also, less of a "memory" so one should be able to recharge wthout waiting for full drain without risking the life of the battery. Hi Cory, Actually, NiMh and NiCd do very well in cold weather and are one of the best battery choices for cold weather. Alkalines are, of course, miserable when they are cold. Best, Larry F Lectro Quote Link to comment Share on other sites More sharing options...
studiomprd Posted September 25, 2013 Report Share Posted September 25, 2013 " I'd be really really curious to know how they do in lectros... " Let us know... Quote Link to comment Share on other sites More sharing options...
wadesrc Posted September 25, 2013 Report Share Posted September 25, 2013 These appear to be a three terminal battery with the center one being a 1.5V output. Check out the flat discharge curve. I am fighting the urge to place an order! http://www.aliexpress.com/item/8-pcs-1-5v-AA-rechargeable-Li-polymer-li-ion-polymer-lithium-battery-Intelligent-Fast-Charger/1113802224.html?cn=null&PID=3836173&tp1=qdrndluerxcv&tracelog=null&src=ale&URL=http%3A%2F%2Fwww.aliexpress.com%2Fitem%2F8-pcs-1-5v-AA-rechargeable-Li-polymer-li-ion-polymer-lithium-battery-Intelligent-Fast-Charger%2F1113802224.html&cv=11032041&af=cj_3836173&vd=30 Quote Link to comment Share on other sites More sharing options...
Jon Gilbert Posted September 25, 2013 Report Share Posted September 25, 2013 Having looked at them I wouldn't trust them further than I could throw them, cheap lithium rechargeables can be lethal They're not worth the risk, I use expensive, protected 3.7v cells in my torches (flashlights), I wouldn't compromise and use these in anything. Quote Link to comment Share on other sites More sharing options...
Angelo Waldron Posted September 25, 2013 Report Share Posted September 25, 2013 Ya, but AliExpress from China? There have been reports on Flashlight Forums about rechargeable lithium batteries exploding blowing up flashlights, some starting fire. Quote Link to comment Share on other sites More sharing options...
studiomprd Posted September 25, 2013 Report Share Posted September 25, 2013 " cheap lithium rechargeables " what was that rule..? oh, yeah... generally speaking, you get what you pay for... Quote Link to comment Share on other sites More sharing options...
cory Posted September 25, 2013 Author Report Share Posted September 25, 2013 Honestly, the price point on these isn't THAT cheap... If I wasn't leaving for a shoot for a couple weeks I'd order 'em now. If no one does by the time I get back I'm totally going to do some testing... Quote Link to comment Share on other sites More sharing options...
Jon Gilbert Posted September 25, 2013 Report Share Posted September 25, 2013 It's cheap for Lithium rechargeables, there are few brands I trust for my 3.7v cells, AW, Panasonic to name a couple, no name Chinese brands are very dodgy. Quote Link to comment Share on other sites More sharing options...
studiomprd Posted September 25, 2013 Report Share Posted September 25, 2013 " If no one does by the time I get back " we can wait.... you are the anxious one. Quote Link to comment Share on other sites More sharing options...
Jon Gilbert Posted September 26, 2013 Report Share Posted September 26, 2013 Do some testing by all means Cory, but Google 'Venting with flame' Quote Link to comment Share on other sites More sharing options...
pverrando Posted October 16, 2013 Report Share Posted October 16, 2013 Received an order of the Kentli AA's today, $68 for 6, including dual charger on ebay. 1st test in SMv at 100mw yielded 3.5 hours run time continuous. Battery voltage is 1.52 volts. I'm going to run a few through at different power levels. Quote Link to comment Share on other sites More sharing options...
Derek H Posted October 16, 2013 Report Share Posted October 16, 2013 Seems about the same as NiMH Quote Link to comment Share on other sites More sharing options...
Boomboom Posted October 16, 2013 Report Share Posted October 16, 2013 +1 I get the same run time with NiMH batts, something like 15 to 20 mins more at 50mW if memory's good (always run my SMVs at 100mW now). Quote Link to comment Share on other sites More sharing options...
pverrando Posted October 16, 2013 Report Share Posted October 16, 2013 2 more tests in SMv, at 100mw, ran for 3.5 hours each. At 50mw, 4 hours. Quote Link to comment Share on other sites More sharing options...
Korosec Posted October 17, 2013 Report Share Posted October 17, 2013 I was the one that posted about these originally on facebook and have been doing some extensive testing. They out perform NIMH so far at 100mw and below but at 250mw they are about the same as a NIMH. Still testing and will post some results here and on facebook later. Quote Link to comment Share on other sites More sharing options...
pverrando Posted February 21, 2014 Report Share Posted February 21, 2014 One of my chargers for this system failed after about a month, and the supplier promised to replace, but after about 2 months, have yet to see my replacement. The batteries are still holding up well, however. Quote Link to comment Share on other sites More sharing options...
RyAgs Posted February 21, 2014 Report Share Posted February 21, 2014 I was just reading about the Sanyo 2700 AA rechargeables on another post. Has anyone tried them with the SMv? Quote Link to comment Share on other sites More sharing options...
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