N/A rechargeable batteries

Discussion in 'Hangar Talk' started by flyingcheesehead, Feb 11, 2019.

  1. flyingcheesehead

    flyingcheesehead Touchdown! Greaser!

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    Hi all,

    My son has been amassing an ever-increasing collection of battery-powered motorized toys, and we've been going through AA batteries at a pretty insane rate, so I'm getting interested in rechargeables.

    Does anyone have any recommendations for rechargeable consumer-sized batteries (ie AA, AAA mostly) that are a full 1.5V and last for a reasonable length of time (akin to an alkaline)?
     
  2. NoHeat

    NoHeat En-Route

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    That requirement puts NiCd batteries out of consideration. They are only 1.2 V per cell. Otherwise, they're about what you need.

    Lithium ion cells are more than 3 V per cell, so that probably won't work either, unless the toys have voltage regulators in them.
     
  3. Clip4

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  4. Shepherd

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    I bought a bunch of USB rechargeable 1.5v LiPo batteries from Amazon.
    They work great in my handheld.
     
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  5. asicer

    asicer En-Route

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    If they are mostly going into motorized toys then 1.2v NiMH batteries is usually mostly OK. If you are Costco member, then they often have Panasonic Eneloop kits on sale from time to time (includes AA batteries, AAA batteries, C and D cell adapters and a 4 bay/4 channel charger). Those make for really good starter sets at really good prices.

    [​IMG]

    Ikea also sells Eneloop clones (They are made in Japan. Eneloops are made in Japan. Japan only has 1 NiMH battery factory. Do the math). However, I don't like their chargers so I'd look on Amazon for one. Just make sure they have as many channels as they have battery bays. A lot of cheaper ones have 4 bays but 2 channels so you have to charge the batteries in pairs. If the pair isn't the same state of discharge, then you'll get a sub-optimal charge out of the pair. Or if you already have the charger from Costco or wherever and just need the batteries, then Ikea is a really good place to get them. Just be aware that they have hi capacity white label ones and low capacity brown label ones. The white ones have higher capacity but shorter standby shelf life (if it's sat a while, just recharge them). The brown ones have lower capacity but have longer standby life.

    [​IMG]
    [​IMG]

    Lastly, Japan makes the best NiMH batteries, IMHO. Although Chinese batteries have been getting better, I'd still avoid anything made elsewhere for the time being.
     
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  6. asicer

    asicer En-Route

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  7. GeorgeC

    GeorgeC Pattern Altitude PoA Supporter

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    Eneloop cells and an Ansmann charger for me.
     
  8. Hang 4

    Hang 4 Pre-takeoff checklist

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    Eneloops plus this charger.
    https://www.amazon.com/dp/B00MYQ8IYS/ref=psdc_10063711011_t2_B01852TBOU

    Use them for all my hang gliding instruments (6 AA cells total) plus things like TV remotes, keyboards and other stuff. The key thing with eneloops is they hold a charge when not in use. Conventional NIHM's lose charge fairly quickly when in storage.
     
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  9. flyingcheesehead

    flyingcheesehead Touchdown! Greaser!

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    Very interesting. I was curious what the discharge and load curves would look like. With that setup, it's pretty much flat until it's dead (or overloaded).
     
  10. weilke

    weilke Touchdown! Greaser! PoA Supporter

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    Most motorized toys run just fine on 1.2 NiCads. There is an electrical reason for this, but if I make a minor mistake in explaining it the pedantic pedanterists are going to be all over it.
     
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  11. ktup-flyer

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    Forgot about this video.
     
  12. asicer

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    That video lost a lot of credibility points for me when he quoted Amazon prices for Ikea batteries. To the best of my knowledge, Ikea doesn't sell on Amazon so those prices are jacked up by resellers.
     
  13. Juliet Hotel

    Juliet Hotel Line Up and Wait PoA Supporter

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  14. chartbundle

    chartbundle Line Up and Wait

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    1. Lower internal Resistance

    2. 1.5V alkaline batteries don't stay at 1.5V, they just start at 1.5V

    https://www.powerstream.com/AA-tests.htm
     
  15. flyingcheesehead

    flyingcheesehead Touchdown! Greaser!

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    Yeah, but he said as much in the video.
     
  16. asicer

    asicer En-Route

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    Doesn't negate the fact it messed up his charts. Garbage data doesn't belong there.
     
  17. RJM62

    RJM62 Touchdown! Greaser!

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  18. flyingcheesehead

    flyingcheesehead Touchdown! Greaser!

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    But it doesn't mean that any of his other conclusions are invalid.