NP50 -BX1- LB61 discharger, test your batteries !

[WrineX]

Hi there! hope you all do well, been a while.

I am working on a battery discharger... long due...
I made a version yeaaaars ago before i made my chargers, but times changed. so time for a new version.

So my idea is to get the discharge voltage as low as what a transmitter uses give or take 130mA for Lectro Zaxcom and Wisycom, and the one that needs a seperate setting the Sound deviced A20... since they hog power...
For this new version i will be using a constant current , by doing so the capacity the battery is showing comes closer to what you can expect on a transmitter in real life give or take. its slow but draining the batteries fast wont give a good result because loading the battery will drop the voltage and might cut off discharging pre mature.
it will be a 4 Bay discharger by the way.

They will have a small Oled screen that display the capacity and if i can, i implement a storage feature, so they can be drained to a voltage that keeps you batteries last longer while not been used. without degrading , the housing will have the same form factor as my chargers, because i like that.. and well i want to make as less new parts as i can
Do you guys have any ideas of things that you would like ? maybe (if the hardware lets me) i can add a feature.
Here a tiny photo of a premature test of the code and some hardware on a breadboard want to know if it works before i make some nice printed circuit boards. Testing the storage setting here. (dont mind the cluttered work place... thats me) and it will get a larger OLED display to see all batteries current capacity at once. instead of 2

have a nice weekend,

Greetings Joppe
 

 

[Matthias Richter]

Hi Joppe,

 

this is a really good idea! Right now it’s realizing while shooting that some batteries last longer than others. 
It’s not something I will use every other day - so I hope it won’t be too expensive 😉