Recent content by ThomasEekels

ok, these chargers come with a 2 way mains plug, as they are ' double insulated', and have no ground. I will check next time I see the son :-)

Sorry if I was unclear. To my knowledge, AC means that there is no permanent ground, but plus and minus will change every 1/50 second. So having a connection between the charge output ground (minus) and the AC ' ground' , would connect plus to that DC ground also every 1/50. wouldn't it ?

Bytheway.. even if the test shows no connection... could this happen when under lead and switching to charge mode ?

Well, not a charge port of the battery, but the charge port of the bike. This port looks similar to the connector of the battery. If the battery is in the dock, the standard charger can connect to this extra port, to charge the battery in the bike. If the battery is out, the charger connects to...

Hi Amberwolf, thanks for the reply. To be frank, I had no idea there could be a problem like you describe. Anyway, I will do these test, that is not a problem. But as in AC, the plus and minus will change at 5 hz... would that connection not kill the DC charge end of the charger anyway...

Our Sparta B2 e-Bikes both now have their second battery. Mine gave out completely, before replacement. My wife's got less capacity, approx 40%, so we replaced it also. So now I have 2 good and one less good battery. The bike has a dock for the battery as well as a charge port for charging in...

My son has a Chinese e-Scooter that currently needs replacement of it's 3rd set of led-acid batteries. It is a 4-pack 48V system. We think the lifetime of the packs is not optimal and also the chargers tend to burn so it is an expensive km-price. We now consider a modification for the new set...

ever seen any balance 3s y-cable at Ali ?

Yonyjou, do you mean I do not have to disconnect them to balance charge them ? So not just plug both mains into a y-plug, but also plug both 3s-balance plugs into a self-made 3s balance y-plug ? As such, I can balance-charge the dual pack as one (in my Imax B6 ? )

Hi All, i am planning to extend the flight of my drone, by adding a 2nd battery. The max payload of my drone is more than the weight of an additional battery, so that is not the problem. For now, I have designed a docking station that comes in place of the original battery and that has a...

They are brand new. I bought them to rebuild my e-bike, but it is Bosch, so that does not work. Now I seek new destination. Can I just add the BMS and also add external balance wires ? will the balance charger not interfere with the board's balance ?

So I can just skip the board, add balance wires and let the charger do the balancing ? It is the Imax B6 ....

Hi All, I have a bunch of 18650 3000mah li-ion cells doing nothing, so I want to build some packs for my drone. I am planning to make 3s2p packs but I lack some theory for charging etc. If I connect them in 3s 2p, I can add a battery protection board, but does that also take care of cell...

Thanks for this info. Indeed,the scooter does not have a balance between the 4 led-acid packs. The individual charge for balance is a good tip. I could run4 sets ov 12v leads to the outside... however.. any comments on my initial questions ?

First, I decharged the pack, just to be sure, by wiring a car bulb over the terminals Next, I cut it open with the Dremel, starting at the less risky and. (Mind the sand bucket..... :-) The inner battery showed to be also part of the outer casing. Did not see that coming, but it explains...