If possible, I would like a simple illustration showing the recharging of a battery, with polarity symbols indicated (perhaps showing a DPDT switch if batteries are to remain insitu for charging). I seem to recall the dim very distant past that when recharging a lead/acid type battery that polarity was reversed for charging. Maybe someone could affirm this and also show how ni-cads and Nickel metal hydride batteries (cells) are charged. My adult son is showing an interest again in R/C boats and I cannot make sense of this recharging business.
Charging a battery
- Thread starter Tim Brien
- Start date
R/C traction batteries usually come with a particular type of connector. EG Tamiya.
The charger you will be using should have the matching type of connector and you simply unplug the battery from the model and plug it into the charger. Make sure the charger cell count matches the battery and press START.
The charger you will be using should have the matching type of connector and you simply unplug the battery from the model and plug it into the charger. Make sure the charger cell count matches the battery and press START.
NO! Charging of lead acid batterys is done with the normal Positive and negative terminals as normal! as has already beem stated ni-cads and Nimh batteries are charged with a battery charger comonly known as a peak level automatic charger. If using LiPo batteries a different balanced charger will be needed. Both the Nimh and ni-cads have a tendecy to burst into flames if mischarged! and the lipo's are very touchy about charge and correct handling
I have just started into the world of boats and have done quite a bit of research to find the system that suits my boat and myself and have come up with using Nimh batterys and a dedicated charger for them but cheap it ain't!!
I have just started into the world of boats and have done quite a bit of research to find the system that suits my boat and myself and have come up with using Nimh batterys and a dedicated charger for them but cheap it ain't!!
My experience of recharging batteries has been limited to those from cameras which come with a dedicated charger and AA NiMhs and similar. All I would say is the rapid charger may charge the batteries faster, but the running time seems to be reduced, while using a slow charger seems to give a longer running time. The apparent reductions in the running time aren't permanent, it solely seems to dependent on the type of charger used.
Tim Brien said:
This might get you started as a basic intro
http://riksrailway.blogspot.co.uk/2013/10/getting-started-with-battery-power-and.html
Rik
Here`s a simple charging circuit I did for a friend who was having a bit of difficulty grasping my verbal descriptions. The plug is meant to be a 2.1mm centre positive female connection, the charger at the other end would be any appropriate charger for the battery type provided that battery type was NiMH, NiCD or Pb; I think you would need to add a balance cable if it was one of the lithium battery chemistries but there may be some which I am not aware of that would not require that. However, I wouldn`t use just this circuit with lithium. You would probably want to add a fuse between the battery and the rest of the circuit as well.
Attachments
I equipped each of my trams with one of these; http://www.jaycar.com.au/productView.asp?ID=SF2281
Auto resetting circuit breaker. They are slow blow so use one at 50% of what you actually need.
Better than a fuse I think....
Auto resetting circuit breaker. They are slow blow so use one at 50% of what you actually need.
Better than a fuse I think....
I have found that Polyswitches work pretty well.
Say you need overall protection of 2 amps but want the fuse to go open more quickly than they normally would?
I often use two 1 amp fuses in parallel. It has been my experience that as no two fuses are exactly the same, one will always open before the other transferring the full current to the second fuse which will go open almost instantly.
Say you need overall protection of 2 amps but want the fuse to go open more quickly than they normally would?
I often use two 1 amp fuses in parallel. It has been my experience that as no two fuses are exactly the same, one will always open before the other transferring the full current to the second fuse which will go open almost instantly.
