Hey everyone. I would like to wire a usb charging port to my 60v scooter battery so I can charge things on long trips. How would I go about doing this?
Ill check that out.I don't care about speedy charging, it is mostly just to keep my bluetooth speaker alive.There are step down voltage converter modules that would make this pretty straightforward. If you're ok with default (slow) charging rates you can just do direct wiring to the power leads. If you want phones and other smart devices to see it as a fast charging port, there's a bit more work involved, but I don't remember those details.
Here's one example:
https://www.digikey.com/product-detail/en/recom-power/R-78HB5-0-0-5-W/945-2444-ND/5765379
Recom Power R-78HB5.0-0.5/W
View attachment 204945
Here's a Digikey search which I think is filtered appropriately (still verify specs on any particular item you pick.)
https://www.digikey.com/products/en/power-supplies-external-internal-off-board/dc-dc-converters/132?k=&pkeyword=&sv=0&pv1471=305478&pv1471=116509&pv1471=119717&pv1471=143803&pv1471=197370&pv1471=215305&pv1471=219212&sf=1&FV=1525|249171,ii1|2211,-8|132,573|106024,573|213650,573|275665,573|278186,573|278851,573|95304,573|95694&quantity=&ColumnSort=0&page=1&stock=1&nstock=1&pageSize=25
If it doesn't have terminals for the individual batteries, then you need to use the full 60V to power a USB charging port. You'll want to use a switching regulator to avoid excessive power dissipation. Few regulators support a 60V input so you may need to drop the voltage with a power zener diode.I cant tell what its internals. It is a big sealed blue box. The long trips are on the scooter. I cant drive
I'm pretty sure that would do it. I did look a little bit at the datasheet for more details, and it looks like they recommend an external capacitor across the inputs if the input is over 50V:
For what it's worth, I made sure to filter my first Digikey voltage converter list for models that accept over 60V so they should be ok in that respect, although you have to read the datasheets to find details like what I pointed out in my last post - the unit in question requires an extra cap on the input for use over 50V.If it doesn't have terminals for the individual batteries, then you need to use the full 60V to power a USB charging port. You'll want to use a switching regulator to avoid excessive power dissipation. Few regulators support a 60V input so you may need to drop the voltage with a power zener diode.
FWIW, I was responding to post #3 and didn't check anything you posted #4.For what it's worth, I made sure to filter my first Digikey voltage converter list for models that accept over 60V
Why would you do that? You need all three leads, connected as shown in the datasheet. There's a pic of the basic wiring, from the datasheet, in post 8 above - it also shows where the capacitor should be added.Alright,cool I ordered one. When wiring it do I just tape off the brown lead
I thought since it is rated for higher than 60v I didnt need a capacitor. I am Not experienced and pretty much need this spelled out for me. The red and black wire are obvious but I do not know what to do with the brown wireWhy would you do that? You need all three leads, connected as shown in the datasheet. There's a pic of the basic wiring, from the datasheet, in post 8 above - it also shows where the capacitor should be added.
Always add capacitors! Input and output.I thought since it is rated for higher than 60v I didnt need a capacitor. I am Not experienced and pretty much need this spelled out for me. The red and black wire are obvious but I do not know what to do with the brown wire
Are you saying put a tranzorb on the input and out put as well or just the input?Always add capacitors! Input and output.
And a Tranzorb as well to clip the spikes that will be produced. https://www.digikey.com/products/en?mpart=P6KE68A-E3/54&v=112 may be ok.
And a series fuse or Polyswitch on the regulator input. https://www.digikey.com/product-detail/en/littelfuse-inc/RXEF050/RXEF050HF-ND/5015994
I have used those Recom regulators in quite a few of my products. They work well, and have a 72V max input. That is a bit close for my liking. Make sure you do get the "H" versions as the standard ones have lower input voltage rating.
The caps I use are 100nF ceramic and 10uF Tants on both sides of the regulators.
But first, you need to determine what the max voltage of your battery actually is. Measure it while charging.
It could go to close for comfort to the 72V max of the regulator.
You may get away with using a switch mode 110V or universal mains plug pack. That could be worth a try. Full plug pack power probably would not be reached, but it may be enough.
THANK YOU SO MUCHHere is a complete solution:-
https://www.ebay.co.uk/itm/8-60V-to...710593?hash=item5d8800c601:g:zrAAAOSwUTZcb9Jw
Questions were raised earlier about voltage ranges. It seems likely that 60V is nominal, and that on a full charge the system will be over 60V. Is the linked module, which is described as 8-60V in, going to be ok with higher voltages?Here is a complete solution:-
https://www.ebay.co.uk/itm/8-60V-to...710593?hash=item5d8800c601:g:zrAAAOSwUTZcb9Jw
As I mentioned above. You do need to find out what the actual battery voltage is. For example, a "12V" car battery runs at about 14V during charge. If the same ratio applies to your 60V battery, you are looking at 70V.But first, you need to determine what the max voltage of your battery actually is. Measure it while charging.
It could go to close for comfort to the 72V max of the regulator.