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UK diy (uk.d-i-y) For the discussion of all topics related to diy (do-it-yourself) in the UK. All levels of experience and proficency are welcome to join in to ask questions or offer solutions. |
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#1
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Battery pack and charger.
I need a 12 volt rechargeable battery pack for something I'm building for
work. Something using AA cells would be a decent size/capacity compromise. The pack will be external to allow quick changing and will have a flying lead connector. I'll need three to cover requirements and a charger which can recharge in say four hours but have an automatic cutout if left on for longer. Obviously I can source them from RS etc, but wondered if there was perhaps a model pack that would be better value? -- *They call it PMS because Mad Cow Disease was already taken. Dave Plowman London SW To e-mail, change noise into sound. |
#2
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Battery pack and charger.
What sort of price are you looking at and what would be the max current you
need to supply? 1050Mah NiMh packs with flyleads are around £21 but these are smaller them AA size and around £35 for a model type charger that will charge in 4 hours or quicker if you want and auto cut off "Dave Plowman (News)" wrote in message ... I need a 12 volt rechargeable battery pack for something I'm building for work. Something using AA cells would be a decent size/capacity compromise. The pack will be external to allow quick changing and will have a flying lead connector. I'll need three to cover requirements and a charger which can recharge in say four hours but have an automatic cutout if left on for longer. Obviously I can source them from RS etc, but wondered if there was perhaps a model pack that would be better value? -- *They call it PMS because Mad Cow Disease was already taken. Dave Plowman London SW To e-mail, change noise into sound. |
#3
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Battery pack and charger.
Dave Plowman (News) wrote:
I need a 12 volt rechargeable battery pack for something I'm building for work. Something using AA cells would be a decent size/capacity compromise. The pack will be external to allow quick changing and will have a flying lead connector. I'll need three to cover requirements and a charger which can recharge in say four hours but have an automatic cutout if left on for longer. Obviously I can source them from RS etc, but wondered if there was perhaps a model pack that would be better value? Since its external, and does it have to be AA cells? how about laptop batterys? you can pick these up cheap on ebay in all different sizes. As to the charger I'll leave that to you. ;-) -- Sir Benjamin Middlethwaite |
#4
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Battery pack and charger.
Dave Plowman (News) wrote: I need a 12 volt rechargeable battery pack for something I'm building for work. Something using AA cells would be a decent size/capacity compromise. The pack will be external to allow quick changing and will have a flying lead connector. I'll need three to cover requirements and a charger which can recharge in say four hours but have an automatic cutout if left on for longer. Obviously I can source them from RS etc, but wondered if there was perhaps a model pack that would be better value? Have you thought of a sealed lead acid battery?. Maplins do various sizes and also the chargers. Trevor Smith |
#5
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Battery pack and charger.
In article ,
The3rd Earl Of Derby wrote: Since its external, and does it have to be AA cells? how about laptop batterys? you can pick these up cheap on ebay in all different sizes. That's a thought. But presumably they need to dock in a housing to make contact? As to the charger I'll leave that to you. ;-) It's likely to be the easy part. -- *Why doesn't Tarzan have a beard? * Dave Plowman London SW To e-mail, change noise into sound. |
#6
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Battery pack and charger.
In article . com,
Trevor Smith wrote: Have you thought of a sealed lead acid battery?. Maplins do various sizes and also the chargers. Bit too heavy for this application. -- *Two many clicks spoil the browse * Dave Plowman London SW To e-mail, change noise into sound. |
#7
Posted to uk.d-i-y
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Battery pack and charger.
"Trevor Smith" wrote in message ups.com... Dave Plowman (News) wrote: I need a 12 volt rechargeable battery pack for something I'm building for work. Something using AA cells would be a decent size/capacity compromise. The pack will be external to allow quick changing and will have a flying lead connector. I'll need three to cover requirements and a charger which can recharge in say four hours but have an automatic cutout if left on for longer. Obviously I can source them from RS etc, but wondered if there was perhaps a model pack that would be better value? Have you thought of a sealed lead acid battery?. Maplins do various sizes and also the chargers. Trevor Smith quick charging might rule them out |
#8
Posted to uk.d-i-y
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Battery pack and charger.
Dave Plowman (News) wrote:
In article , The3rd Earl Of Derby wrote: Since its external, and does it have to be AA cells? how about laptop batterys? you can pick these up cheap on ebay in all different sizes. That's a thought. But presumably they need to dock in a housing to make contact? Nope a make shift connector... car spade bits As to the charger I'll leave that to you. ;-) It's likely to be the easy part. -- Sir Benjamin Middlethwaite |
#9
Posted to uk.d-i-y
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Battery pack and charger.
In message , "Dave Plowman (News)"
writes In article . com, Trevor Smith wrote: Have you thought of a sealed lead acid battery?. Maplins do various sizes and also the chargers. Bit too heavy for this application. Have you looked at e.g. http://cpc.farnell.com/productimages...d/42403741.jpg Which comes from http://cpc.farnell.com/jsp/endecaSea...owImages=true& Nty=1&N=411&Ntk=gensearch&Ntt=sealed%20battery&No= 0#results -- geoff |
#10
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Battery pack and charger.
raden wrote:
In message , "Dave Plowman (News)" writes In article . com, Trevor Smith wrote: Have you thought of a sealed lead acid battery?. Maplins do various sizes and also the chargers. Bit too heavy for this application. Have you looked at e.g. http://cpc.farnell.com/productimages...d/42403741.jpg Which comes from http://cpc.farnell.com/jsp/endecaSea...owImages=true& Nty=1&N=411&Ntk=gensearch&Ntt=sealed%20battery&No= 0#results £24, sod that for a game of soldiers. -- Sir Benjamin Middlethwaite |
#11
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Battery pack and charger.
On Sat, 28 Jan 2006 11:47:49 +0000 (GMT), "Dave Plowman (News)"
wrote: I need a 12 volt rechargeable battery pack for something I'm building for work. Something using AA cells would be a decent size/capacity compromise. The pack will be external to allow quick changing and will have a flying lead connector. I'll need three to cover requirements and a charger which can recharge in say four hours but have an automatic cutout if left on for longer. Obviously I can source them from RS etc, but wondered if there was perhaps a model pack that would be better value? Hi, How about a couple of 6v packs? http://search.ebay.co.uk/6v-9-6v-3-6v-pack_W0QQbsZSearchQQcatrefZC6QQcoactionZcompareQQc oentrypageZsearchQQcopagenumZ1QQfposZKT8Q209AXQQfr omZR10QQfsooZ1QQfsopZ1QQftrtZ1QQftrvZ1QQga10244Z10 425QQsacatZQ2d1QQsadisZ200QQsargnZQ2d1QQsaslcZ3QQs atitleZ6vQ20Q2d9Q2e6vQ20Q2d3Q2e6vQ20packQQsbrftogZ 1QQsofocusZbs Or maybe a DC-DC converter with 7.2v or 9.6v pack. cheers, Pete. |
#12
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Battery pack and charger.
On Sat, 28 Jan 2006 20:15:50 +0000, Pete C
wrote: Hi, How about a couple of 6v packs? http://search.ebay.co.uk/6v-9-6v-3-6v-pack_W0QQbsZSearchQQcatrefZC6QQcoactionZcompareQQc oentrypageZsearchQQcopagenumZ1QQfposZKT8Q209AXQQfr omZR10QQfsooZ1QQfsopZ1QQftrtZ1QQftrvZ1QQga10244Z10 425QQsacatZQ2d1QQsadisZ200QQsargnZQ2d1QQsaslcZ3QQs atitleZ6vQ20Q2d9Q2e6vQ20Q2d3Q2e6vQ20packQQsbrftogZ 1QQsofocusZbs Or maybe a DC-DC converter with 7.2v or 9.6v pack. Suitable NiMh delta V charger: http://www.budgetbatteries.co.uk/product/20462/MCUNI.html?utm_source=Froogle&utm_medium=organic&u tm_term=20462&utm_campaign=prodfeed http://www.google.com/search?hs=o0v&hl=en&lr=&safe=off&client=opera&rls= en&q=BT02282+charger&btnG=Search cheers, Pete. |
#13
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Battery pack and charger.
In article ,
Pete C wrote: Or maybe a DC-DC converter with 7.2v or 9.6v pack. That's certainly a possibility - the cost of that might be smaller than the cost of the battery packs over the projected life - if 'model' packs were indeed better value. But so far I'm not sure they are. -- *Tell me to 'stuff it' - I'm a taxidermist. Dave Plowman London SW To e-mail, change noise into sound. |
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