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Vistalite nightstick charger help
I'm being slack and replying to two posts in one here. Please note
attributions if you wish to disagree with anything written! rex1047 wrote: The charger you need is Input 240VAC 50HZ OUTPUT 7.2VDC @ 300mA Hope this helps That's accurate for NiCd, but NiMH needs a higher current - around 600mA. The 300mA will work on the 2200mAH NiMH pack, but it'll take around 12 hours to charge. Al User wrote in message ... Gemma, This jaycar plugpack may suit... http://www1.jaycar.com.au/productView.asp?ID=MP3010 STOCK-CODE: MP3010 RRP: $21.95 Probably not, since that'll deliver very close to a constant voltage at 7.2v. You really need constant current for NiMH and NiCd, at least for "dumb" chargers like most plugpack styles. It'd work pretty well as a charger for SLAs up to around 3Ah though. If you really want to charge a NiMH or NiCd safely and properly, you need a fairly expensive charger or the skills to make one yourself. Texas Instruments have some interesting chips, and Remote Control shops have interesting chargers. Expect a good charger to cost from $60 upwards. Dick Smith used to have a charger kit for around $20 that needed a plugpack to drive it - I can't see it on a quick look, but the components were pretty basic so it wouldn't be hard to replicate on veroboard. Dave - who has a few nice chargers for various batteries. -- Dave Hughes "Did you know God had a plan for you?" "Does it involve a high-powered rifle and a belltower?" |
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#22
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Vistalite nightstick charger help
I'm being slack and replying to two posts in one here. Please note
attributions if you wish to disagree with anything written! rex1047 wrote: The charger you need is Input 240VAC 50HZ OUTPUT 7.2VDC @ 300mA Hope this helps That's accurate for NiCd, but NiMH needs a higher current - around 600mA. The 300mA will work on the 2200mAH NiMH pack, but it'll take around 12 hours to charge. Al User wrote in message ... Gemma, This jaycar plugpack may suit... http://www1.jaycar.com.au/productView.asp?ID=MP3010 STOCK-CODE: MP3010 RRP: $21.95 Probably not, since that'll deliver very close to a constant voltage at 7.2v. You really need constant current for NiMH and NiCd, at least for "dumb" chargers like most plugpack styles. It'd work pretty well as a charger for SLAs up to around 3Ah though. If you really want to charge a NiMH or NiCd safely and properly, you need a fairly expensive charger or the skills to make one yourself. Texas Instruments have some interesting chips, and Remote Control shops have interesting chargers. Expect a good charger to cost from $60 upwards. Dick Smith used to have a charger kit for around $20 that needed a plugpack to drive it - I can't see it on a quick look, but the components were pretty basic so it wouldn't be hard to replicate on veroboard. Dave - who has a few nice chargers for various batteries. -- Dave Hughes "Did you know God had a plan for you?" "Does it involve a high-powered rifle and a belltower?" |
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