Thread: hobby batterys

Just get 9 x 2 volt cells and wire up in series, buy the cells in a size and type to suit your 18v needs to make a simular amp/h battery
I have done simular to make a battery pack that has been hard to get.
somewhere like battery world would be a good place to start looking
cheers
blaze

Buy a cheap 18V cordless tool and rob the battery and charger ?

I fly a lot of race quads, and buy some batteries from hobbyking.com

You'll be looking for a 5s lipo. Nominal voltage is 18.5v - around 20v when charged, 16v you'll want to recharge. You can get a charger from these guys too - I use a sky rc charger. Can find model no if you need.

MAKE SURE YOU SELECT AUSTRALIAN WAREHOUSE. As they only ship batteries to Australia from their Aussie warehouse - in Moruya I believe. Let me know if you need any more help

1998 Disco 1 300tdi no edc no abs
1995 Disco 1 v8i dual fuel RIP

It's not leaking oil, it's bleeding power.

Cheapest or best? Heavy or light? Higher end power tools are often sold separately from batteries and chargers. Two Dewalt 18V 5.0Ah Lithium slide batteries and a charger would cost you around $400 but they would last for years and not strain your back. Cheap batteries either don't last long or weigh tons. Three matching 6V SLA batteries plus a charger or 15 matching 1.2V Ni-MH batteries would be what you'd get from a Jaycar shop if you wanted something to walk out the door with.

how much current and how long does it need to go for?

you could go a pair of 8.4v recharge packs from a model car

you coudl custom make it from a bunch of rechargable C or sub C cells.

Originally Posted by lewy

i am trying to get an 18 volt battery to run my gold detector.The young bloke in Jaycar suggested that i buy a 12 volt and a 6 volt connect them in series that would give me 18 volts.What would happen here.1]I would get 18 volts and live happily ever after. 2] the 6 volt would overload and possibly blow up. 3]both batterys would even out somewere in the middle voltage range.only talking 5 ish amp hour batterys.

What type of battery does the gold detector take? Did you try 6 doors down from Jaycar at Battery World? Or try Outback Batteries tat Yarrawonga or Coolalinga.

The detector is actually 12 volt but can handle up to 24 volt as it has been modified.I have tested it on the power supply and it didn't let the smoke out,more volts = more depth
I have tried my ryobi 18v battery pack,but there seems something in the battery electronics that wont allow it to start the detector possibly the batterys have a low voltage cutout.Haven't separated the battery from the electronics as yet as they are to expensive.
The standard batterys are 14.4v, 4.8 a/h and last for about 6 hours before the detectors low battery light comes on however performance is effected well before then