[RE-wrenches] Battery load tester purchase advice?

[Ray]

I also recently purchased a Variac.  They are really nice for dialing in 
voltage, especially when testing old AC equipment. Line voltage here is 
almost 125 vac these days, while old tube equipment was designed for 110 
vac.   Its also a great way to slow down power tools for better 
control.  So a Variac has lots of uses  besides load control. You just 
have to be careful because it can output up to 145 vac.  I plug a Kill A 
Watt meter into the output to double check the voltage, as the markings 
on the control and the on board meter are not accurate.

https://www.circuitspecialists.com/variac-variable-ac-ps05kva.html?otaid=gpl&gclid=EAIaIQobChMI56mLvLDF1QIVBIC9Ch1NEQhqEAkYAiABEgKEgfD_BwE

Every mad scientist should have one.

R. Ray Walters
Chief Technical Officer, RemoteSolar.com
BS Mech Engineering, 1988
Former NABCEP Certified, 2004-2016
Licensed Master ELectrician, Colorado
303 505-8760

On 8/7/17 8:27 AM, RE Ellison wrote:
> Put one or two of the lightbulbs on a Rheostat and uses for fine control
>
> I got lucky and found an old ohmite load bank real reasonable
>
> Big and bulky you don't want to carry it far !
>
> Bob ellison
>
> On Aug 7, 2017, at 9:51 AM, Dan Fink <danbob88 at gmail.com 
> <mailto:danbob88 at gmail.com>> wrote:
>
>> Thanks to everyone for their input, it really clarified how to get 
>> the data Trojan is looking for. I am going to go with what we have in 
>> stock as a "Trojan Approved" load tester is out of my price range, 
>> and the reasonably priced auto parts store ones hit you 100+ amps 
>> plus as they are trying to test CCA, not SOC. I have a voltage 
>> logging USB unit along with a current logger and CT. We'll use a 
>> small inverter and switchable AC light bulbs for load so that it 
>> stays constant at the 25A Trojan wants to see, and in the future 
>> we'll be able to adjust it for amperage by switching in and out more 
>> light bulbs.
>>
>> Dan Fink
>> Professor of Solar Energy Technology, Ecotech Institute
>> IREC Certified Instructor™ for:
>> ~ PV Installation Professional
>> ~ Small Wind Installer
>> Executive Director, Buckville Energy
>> NABCEP Registered Continuing Education Providers™
>> 970.672.4342 <tel:970.672.4342>
>>
>>
>> On Mon, Aug 7, 2017 at 2:05 AM, Hugh <hugh at scoraigwind.co.uk 
>> <mailto:hugh at scoraigwind.co.uk>> wrote:
>>
>>     I have used a load resistor on a voltage controlled relay VCS
>>     from solar converters and a USB data logger. I only used the
>>     relay because I didn't want to kill the battery or sit watching.
>>     USB voltage loggers are good things to own anyway.
>>
>>     Hugh
>>
>>
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