Recent content by callagga

yeah I had one but wanted to measure charge & discharge - didn't know there were other meters that were so cheap

Update: Whilst setting up a way to make it much easier to monitor usage, I actually found a bad solder joint on the line between the charger and the battery charging input. This would explain perhaps why I did a charge then drain test this afternoon and got 9.44Ah out of the battery which seems...

I agreed :) Wanted to get something working to this weekend to help fault find. Got it working ok actually. That's a great price though, I'd just been looking at the cost of the wattsup meter..

What did you mean here actually? My battery (Ping) has a different set of Pos/Neg leads for both charge and discharge. Just wanted to check whether it's ok to actually connect the positive together here as part of the design? i.e. therefore with one DPDT switch switch the negatives, but...

thanks for the tip! Hadn't realized this

thanks for the ideas guys @amberwolf - I was thinking doing a 3-pole arrangement like this might be good so the middle switching position could be used to have the meter disconnected, to make sure you have a way to reset the meter before going from charging to riding. Does this make sense...

Any advice on how I could use a single Watts Up meter to make notes on "input Ah" and "output Ah" without having to change connecting between charging and usage? I'm happy to have to make manual readings (or reset) in between charging and usage, but didn't want to have to repatch the leads...

Dumb question, but if you got the positive / negative connection around the wrong way would that damage a Ping battery? Ideally they would have protection no?

I've just noted that when I have plugged in my eBike to the charger, the charger is making no sound (as per usual, as I normally hear the fan start up) and doesn't seem to be charging my Ping battery. Current battery voltage on the battery is around 33V, but normally its up around 36V when...

oh ok - see what you mean now - do they actually stay tight? these don't slowly slip a little bit over time do they?

@Phoebus - do you have a link to these to just what you use?

I've actually got this one (i.e. re box at the back - it's not my bike here...) I was just thinking about wrapping it in the cushioning material (not at the top for the BMS & heat) then strapping down in the box with elastic cord (like a bungee), although thinking about this now I'm not sure...

@cwah - wasn't thinking of that but it's another idea - I was just thinking more of something I could wrap around the battery pack. @ebent replay was kind of what I was after, like using something like mouse mat material, but a bit larger to fit around the battery when I wrap it up...

Just got a new Ping battery - just thinking about doing a better job with it when I mount it into the plastic lockable carrier behind my seat. How much cushioning type material (e.g. how thick) and what type? e.g. how about something like a 2cm thick foam like you get in a sleeping mattress...

Excellent - Tks for the info