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-   -   Multimeter for battery (https://www.rctech.net/forum/radio-electronics/949046-multimeter-battery.html)

Miko1976 06-21-2016 06:29 AM

Multimeter for battery
 
Went to buy a multimeter for my battery but none come with 4mm bullets.

Any suggestions?

Thanks

Kraig 06-21-2016 06:33 AM

Are you trying to measure the voltage of the battery? If so, what about one of these, click here?

Roelof 06-21-2016 06:51 AM

Most multimeters do come with 4mm plugs, like this one:
https://www.amazon.de/Voltcraft-VC13...rds=multimeter
It has 4mm connections so you can make your own cables or use a charger cable.

But if you want to measure the status of the battery you need to do that with a load like a resistor or a lightbulb.

Miko1976 06-21-2016 07:03 AM

Trying to measure amperage...
 

Originally Posted by Kraig (Post 14575161)
Are you trying to measure the voltage of the battery? If so, what about one of these, click here?

The goal is to hook up the multimeter in conjunction with a motor analyzer to get a more accurate amperage reading.

Roelof 06-21-2016 07:11 AM

Ah....

Why not something like this:
http://www.ebay.com/itm/0-100V-50A-D...8AAOSwezVW1Vjj

Bartje81 06-21-2016 07:11 AM

Will you post results? I'm specifically interested in the Amp readings!

Are you going to try sensorless and sensored on the motors?

cutting42 06-21-2016 07:34 AM

Usually, when measuring amps with a multimeter you run the meter in circuit but the amp draw from pretty much any electric car system will be massively higher than any multimeter can cope with and you will destroy it.

What you need for high amps is a clamp meter which has a sprung 2 part ring that you clip around the supply wire and it calculates the amps from induction. You can get cheap ones that do AC but for DC you need a decent bit of kit, something like this: https://www.amazon.com/Amprobe-ACDC-.../dp/B0011DC008

Miko1976 06-21-2016 07:34 AM

Sensored
 

Originally Posted by Bartje81 (Post 14575209)
Will you post results? I'm specifically interested in the Amp readings!

Are you going to try sensorless and sensored on the motors?

Great video on this on YouTube. Look up Nick Adams, Sweet Spot for Blinky. I just need a multimeter with the proper sized leads. The have to plug into the battery & analyzer

cutting42 06-21-2016 07:36 AM


Originally Posted by Miko1976 (Post 14575230)
Great video on this on YouTube. Look up Nick Adams, Sweet Spot for Blinky. I just need a multimeter with the proper sized leads. The have to plug into the battery & analyzer

I will look as well, I am intrigued

cutting42 06-21-2016 07:49 AM

Ah, I see what is being done, 10A is enough. I was thinking mod under load ;-)

Miko1976 06-21-2016 07:56 AM

Any ideas on multimeter...
 

Originally Posted by cutting42 (Post 14575248)
Ah, I see what is being done, 10A is enough. I was thinking mod under load ;-)

Yes, it's just for stock with no load.

Know of any types of multimetersome that come with 4mm bullets? I can't find any online. Thanks!

Andy Koback 06-21-2016 08:02 AM


Originally Posted by Miko1976 (Post 14575254)
Yes, it's just or stock with no load.

Know of any types of multimetersome that come with 4mm bullets? I can't find any online. Thanks!

For checking amp draw up to 30 amp, this will work great and not very expensive. Also come with Dean connectors.

http://www.lefthander-rc.com/catalog...oducts_id=2944

maslin 06-21-2016 08:08 AM

Multimeters are all 4mm bullets. You just need a pair of leads with 2 male ends.

https://s32.postimg.org/74o6og8r9/IM...621_090452.jpg

HBRob 06-21-2016 10:31 AM

This is what you want to use. I have this in line before my analyzer. Works perfect.

http://www.ebay.com/itm/G-T-Power-RC...gAAOSwhkRWgqSH

Geezatec 06-21-2016 11:00 AM

What Multimeter did you purchase??


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