test battery capacity

[hugh mackay]

what equipment do i need to use to test the capacity of batteries lead acid nicad and liyhium as there are many to test 12volt but not 24 36 or 48

 

[trex]

you need something to discharge the battery and an energy meter to measure how much you use to recharge the battery. The capacity is roughly 90% of energy consumed during recharge.
I use two heater's bars and crocodile clips to make up my discharge circuit. Some people use 3 or 4 x 50W 12V GU11 halogen bulbs wired in series.

http://www.ebay.co.uk/itm/NEW-Plug-in-Energy-Monitor-Power-Meter-Electricity-Watt-Volt-Monitoring-Socket-/262370915388

 

[Christopher John Holmes]

a SKYRC charger will charge & discharge and has display in ah (amp-hours)

 

[Alan Quay]

a SKYRC charger will charge & discharge and has display in ah (amp-hours)

You can only discharge at something like 1A, which is nowhere near enough to test a bike battery. You need closer 10A for a realistic test, more if you want to test how it will behave under load.

Sent from my HTC One_M8 using Tapatalk

 

[Christopher John Holmes]

You can only discharge at something like 1A, which is nowhere near enough to test a bike battery. You need closer 10A for a realistic test, more if you want to test how it will behave under load.

Sent from my HTC One_M8 using Tapatalk

ya i see where your coming from lipo's are your best bet if your bluilding a battery

 

[Alan Quay]

ya i see where your coming from lipo's are your best bet if your bluilding a battery

I think you misunderstood my post. I'm saying that the SkyRC Imax chargers will only discharge a battery at 1A max. I'm presuming the OP needs to test batteries of a suitable capacity for an electric bike (c.10A/h)