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12v battery charger

Discussion in 'Night Vision Optics and Illumination' started by weebster, Jul 3, 2012.

  1. weebster

    weebster Busy Member

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    Has anybody got a link to a decent 12v charger for these yingtong batteries?.......
     
  2. stoogey

    stoogey Engaging Member

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    now there is a question...

    i've heard a lead acid charger will do it, very similar or the same type of charger, the problem is 'sensing' the cells, if you've not seen one go bang then try sitting 18 inch away when it does for best effects lol, its been enough to put me on edge around chargers.

    theres one called a B6 lipo charger, google or ebay, but there isnt leads to moniter all three cells, theyre actuly classed as 11.4v packs, but charge up like a 12v.

    the write up sais theyre internally monitered etc (the black box ones) for safety, heres the only spec sheet manual i could find on the net. i've rang a couple of rc shops about them but all i got was ooo arrr ummm bang we had a battery blow up ooo the other week want it Jeff, and .. ooooo yu wanna buy one of these.

    mine are 9800mah on the sticker, they do take up to a couple days to charge from flat but i havent waited till the charger light goes out, it was recent when the single cell battery enlightened me to what they mean by exspoiding lol. (all batteries will under the rong condisions).
    however, i've been piddling with electronic curcuits and if any thing dodgey occurs the battery pack light does 'click' into a 2v mode with no current, switch off and on it resets..well, so far any way. when the packs empty it switches off with an audable click.

    12voltBat009.jpg
     
  3. weebster

    weebster Busy Member

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    Hmmm....I might invest in one of those deben ones just be on the safe side,exploding batts I can do without! :eek:
    Thanks for your reply :up:
     
  4. stoogey

    stoogey Engaging Member

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    would be intresting to compair the innerds from the deben and chinese, would be a shock if they were the same...a hundred quid shock lol.
     
  5. hun73r666

    hun73r666 Keyboard Hero

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    if you are not sure about a charger I would get an extension lead and use it in the garden from a safe distance. Rather like a firework! ;)
     
  6. kenhawker

    kenhawker Honorary Member

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  7. mick 1986

    mick 1986 Keyboard Hero

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    You make me laugh ken! :)

    On a serious note, I have been looking at that battery and charger kit, it seems the battery's only include the charger in the lower current spec ones. How long do you think a 2800-3000mAh battery will last with a screen camera and intermittent 300-500mW laser??
     
  8. kenhawker

    kenhawker Honorary Member

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    Lol you`de be suprised mick. I was the only cctv charger I could find in the uk. The battery could be used along with a DC voltage reducer to power a laser, it would save it going to waist.

    ken
     
  9. stoogey

    stoogey Engaging Member

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    hmm 130 mah for the camera, 300-1000mah for the ir, call it an amp for the ir, 3800mah battery 2 hour 2 1/2? camera alone 20 odd hours.

    any no dont plug into a car battery charger lol... a wall plug one was in the read up.(cealed lead acid battery) but, no i didnt try it it eather suprisingly.
     
    Last edited: Jul 6, 2012
  10. weebster

    weebster Busy Member

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  11. Junes1

    Junes1 Engaging Member

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    I've seen Li-ion motorcycle batteries. How do they recharge them :confused:
     
  12. rdkater

    rdkater Member

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  13. weebster

    weebster Busy Member

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    I doubt i'd find a pouch big enough,but an extension cable is a possibility....hmmm,...where can I find a 323 mile long extension cable? :D
     
  14. Jam1e

    Jam1e Active Member

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    Apologies if i'm being dim and everyone knows this, regarding Li-po and Li-ion batteries. Just thought i.d try and help.

    Myself and dozens of others in our club use Li-ion and Li-po batteries all the time in RC aeroplanes. They're perfectly safe if used and charged correctly. With the correct charger.

    I only use lipo myself, and have around 20 of them. Each cell charged is around 3.7 volts. This being called a 1s. 7.4 volts is a 2s, and so on. Lipo's come with a "C" rating. Then obviously an mah rating. The mah multiplied by the C rating gives you the maximum amps the battery can deliver.
    So for instance. One of mine is a "Rhyno" 2200 mah 3s 30c rating. Its a 3s, so around 11.1 volts (or slightly higher fully charged) multiplied by 30, (C rating) giving a maximum of 66 amps.
    On another note, you should never let a lipo cell be discharged below around 3.3 at the very lowest as it's highly unlikely to hold a charge again.
    Most modern lipo batteries come with a "balance lead" so the correct charger can detect if one cell is full so it can stop charging that cell but continue to charge the others. Hence keeping them balanced.

    Below is a link to a site i've spend a small fortune on! Obviously most of this stuff is of no use to you guys but they do sell good lipos li-ion and chargers for both at very good prices.
    http://www.hobbyking.com/

    The link below takes you to chargers, charger leads, balance leads used for lipo, li-ion, nicad and so on.
    http://www.hobbyking.com/hobbyking/store/__216__408__Battery_Chargers_Acc_-Battery_Chargers.html

    Hope this helps folks.
    Just to add. I'm no expert and i'm well aware there will be ooodles of people out there who could correct me on the finer details of my explanation.
     
    Last edited: Jul 13, 2012

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