Search found 1254 matches

by rg12
May 22 2020 3:03pm
Forum: E-Bike General Discussion
Topic: Looking for This Universal LCD
Replies: 7
Views: 219

Re: Looking for This Universal LCD

last bump...
by rg12
May 22 2020 3:01pm
Forum: Battery Technology
Topic: Watt Meter With Open Hall Sensor?
Replies: 21
Views: 360

Re: Watt Meter With Open Hall Sensor?

So if it's just real-time current monitoring, and not data logging, then go with dipstick's idea, and modify a clamp meter. Perfect. If you are really cheap.. just disassemble your clamp meter... and make it a "remote sensing clamp meter" lol. It's a bit hacked up and the clamp is huge... I just ne...
by rg12
May 22 2020 2:59pm
Forum: E-Bike Technical
Topic: Anyone Tried These 80A Controllers?
Replies: 7
Views: 381

Re: Anyone Tried These 80A Controllers?

Last bump...
by rg12
May 20 2020 2:39am
Forum: Battery Technology
Topic: Watt Meter With Open Hall Sensor?
Replies: 21
Views: 360

Re: Watt Meter With Open Hall Sensor?

What are they trimming exactly? Probably calibration of the output. They are likely factory set with some glue added on top to lock the setting. What would you do if you had to make this work without building circuits/adding components to have a 150A capable split core hall to fit this device? By d...
by rg12
May 20 2020 12:36am
Forum: Battery Technology
Topic: Watt Meter With Open Hall Sensor?
Replies: 21
Views: 360

Re: Watt Meter With Open Hall Sensor?

I think that if you're going to replace the current sensor, you should understand what you're doing, and do it for yourself. It's easy to understand. Don't fear it. The sensor supplied with the display (probably, as per my assumption in previous post) has the following output (sensitivity): 2.5V±2V...
by rg12
May 19 2020 2:49am
Forum: Battery Technology
Topic: Watt Meter With Open Hall Sensor?
Replies: 21
Views: 360

Re: Watt Meter With Open Hall Sensor?

Hmm, will that work? The hall sensor that comes with the watt meter has 4 wires (seen in the photo) but I don't know how many wires the one in the other link has... Not directly. The sensor with the original device you posted looks like it might be this one https://www.aliexpress.com/i/400010622526...
by rg12
May 16 2020 6:55am
Forum: Battery Technology
Topic: Watt Meter With Open Hall Sensor?
Replies: 21
Views: 360

Re: Watt Meter With Open Hall Sensor?

Is there a mV and resistance stuff with a hall current sensor like a shunt? The auction description says "±200A/2.5±0.625V". So it needs 5V to operate, and it outputs 2.5V +3.125mV/A. Hmm, will that work? The hall sensor that comes with the watt meter has 4 wires (seen in the photo) but I don't kno...
by rg12
May 16 2020 5:29am
Forum: Battery Technology
Topic: Watt Meter With Open Hall Sensor?
Replies: 21
Views: 360

Re: Watt Meter With Open Hall Sensor?

Search for split core DC current sensor, or split core hall sensor. For example: https://oceancontrols.com.au/wes-071.html Thanks mate for the idea, looked for a cheaper alternative and found it on eBay :) How can I know if this will work? https://www.ebay.com/itm/Hall-split-core-current-sensor-HST...
by rg12
May 16 2020 5:27am
Forum: E-Bike General Discussion
Topic: Looking for This Universal LCD
Replies: 7
Views: 219

Looking for This Universal LCD

https://onvision.en.alibaba.com/product/60698726938-805479566/ONVISION_Electric_digital_speedometer_custom_screen_vehicle_dashboard_ebike_graphic_speed_instrument_lcd_display_panel.html I've seen it a few times on AliExpress with different plastic enclosures to mount on handlebars and I can't find ...
by rg12
May 16 2020 3:52am
Forum: Battery Technology
Topic: Watt Meter With Open Hall Sensor?
Replies: 21
Views: 360

Watt Meter With Open Hall Sensor?

https://www.ebay.com/itm/Wireless-Voltmeter-Ampere-Meter-DC-120V-100A-Battery-Tester-Remaining-Capacity/142840476346?_trkparms=aid%3D1110004%26algo%3DSPLICE.COMP%26ao%3D1%26asc%3D20200220094952%26meid%3Da541c428c076489aabb4fc5a0bad8239%26pid%3D100008%26rk%3D6%26rkt%3D12%26sd%3D223163181707%26itm%3D...
by rg12
May 15 2020 11:42am
Forum: E-Bike Technical
Topic: Anyone Tried These 80A Controllers?
Replies: 7
Views: 381

Re: Anyone Tried These 80A Controllers?

Anyone else?
by rg12
May 12 2020 1:25pm
Forum: Battery Technology
Topic: Recognize This JST?
Replies: 2
Views: 104

Re: Recognize This JST?

Aha! it's the picoblade!
Thanks mate :)
by rg12
May 12 2020 1:21pm
Forum: General Discussion
Topic: Hole Rivets for Two Thin Metal Plates?
Replies: 17
Views: 347

Re: Hole Rivets for Two Thin Metal Plates?

The barrel thing won't suite me as they aren't short enough and filing is not an option as it's something that I will have too many of those to do on a regular basis.
I guess I will try a few different sizes of rivets.
Thanks alot :)
by rg12
May 12 2020 7:12am
Forum: General Discussion
Topic: Hole Rivets for Two Thin Metal Plates?
Replies: 17
Views: 347

Re: Hole Rivets for Two Thin Metal Plates?

Lots of different types of rivets. Take a look around here: https://www.mcmaster.com/rivets/rivets/ If ya worry about different metals reacting with each other? Use copper rivets. Here's some: https://www.mcmaster.com/rivets/rivets/copper-domed-head-solid-rivets/ Copper rivets are electrically cond...
by rg12
May 12 2020 4:20am
Forum: Battery Technology
Topic: Recognize This JST?
Replies: 2
Views: 104

Recognize This JST?

jst.jpg
jst.jpg (49.97 KiB) Viewed 67 times
In this photo there are two examples of the JST type I'm looking for and on the left you can see the options.
It's the one that you need to lift the thin plastic needles to get the connector out.

Any ideas?
also, what pitch is it?
by rg12
May 11 2020 12:26pm
Forum: General Discussion
Topic: Reading Voltage Through The Main Current Wires
Replies: 7
Views: 192

Re: Reading Voltage Through The Main Current Wires

john61ct wrote:
May 11 2020 11:32am
That too, but the thinner the gauge the more drop for a given current flow.

I guess one could call the "real" voltage drop, the other is an error of measurement.
Got it, thanks mate :)
by rg12
May 11 2020 12:25pm
Forum: Battery Technology
Topic: Lead Acid 60V Charge Voltage?
Replies: 7
Views: 134

Re: Lead Acid 60V Charge Voltage?

Anything is possible, except consistency. Do not order without a promise to hold a specific setpoint. I would think a decent vendor would adjust voltage to your requirement. Again do not expect a "charger" designed for lead to be any more useful for LI than a dumb PSU I see, thanks alot mate :)
by rg12
May 11 2020 11:28am
Forum: Battery Technology
Topic: 60V 100A BMS 65mm and Thinner Than 21mm?
Replies: 9
Views: 430

Re: 60V 100A BMS 65mm and Thinner Than 21mm?

Will do, thanks alot mate :)
by rg12
May 11 2020 11:26am
Forum: General Discussion
Topic: Hole Rivets for Two Thin Metal Plates?
Replies: 17
Views: 347

Hole Rivets for Two Thin Metal Plates?

Am new to riveting and have two pieces of 0.8mm thick copper strips that are 10mm wide and have holes in them that are 3mm wide. I would like to put them on top of each other and run a rivet through two aligned holes. I need the most flush rivet (from both sides) so I thought of the hole rivet/blind...
by rg12
May 11 2020 11:23am
Forum: General Discussion
Topic: Reading Voltage Through The Main Current Wires
Replies: 7
Views: 192

Re: Reading Voltage Through The Main Current Wires

Yes I answered that. Interference from current flow IS the only factor. Higher the current, the more useless the voltage feedback. Which is why all good charge sources use separate sensor wires. Ahh now it's all clear, and I thought that the only interference is the voltage drop across the wires...
by rg12
May 11 2020 9:11am
Forum: General Discussion
Topic: Reading Voltage Through The Main Current Wires
Replies: 7
Views: 192

Re: Reading Voltage Through The Main Current Wires

If measuring voltage without a separate set of sense wires that go from the measuring device straight to the battery, the voltage being read will be lower than the pack voltage since there is a voltage drop from the wires resistance. No. If there is no current flowing you are measuring VoC. In a 3 ...
by rg12
May 11 2020 9:06am
Forum: Battery Technology
Topic: Lead Acid 60V Charge Voltage?
Replies: 7
Views: 134

Re: Lead Acid 60V Charge Voltage?

Hmm...so if I order a chinese lead acid charger, what voltage should I expect?
Will it be different for every charger?
by rg12
May 11 2020 8:38am
Forum: E-Bike Technical
Topic: Anyone Tried These 80A Controllers?
Replies: 7
Views: 381

Anyone Tried These 80A Controllers?

https://www.aliexpress.com/item/4000324426976.html?spm=a2g0o.productlist.0.0.5a958b77EGrkQF&algo_pvid=119a7f76-a819-49bd-b857-7549fc487428&algo_expid=119a7f76-a819-49bd-b857-7549fc487428-0&btsid=0ab50f4415892035713683640e476f&ws_ab_test=searchweb0_0,searchweb201602_,searchweb201603_ https://www.ali...
by rg12
May 11 2020 8:34am
Forum: Battery Technology
Topic: Lead Acid 60V Charge Voltage?
Replies: 7
Views: 134

Re: Lead Acid 60V Charge Voltage?

What is your question? Likely designed for cheap FLA, but good ones will have at least a FLA | GEL | AGM switch to change both Absorb and Float voltages Better ones might have a dozen profiles to choose from. The best are fully user-custom adjustable, sometimes even allowing current to be de-rated....