Power analyzer (inline meter) that measures power in both directions?

[wrybread]

I have this power analyzer:

https://www.amazon.com/gp/product/B07PF67T3P

It's great, but it only measures power going in one direction (from source to load). Does anyone know of a similar product that measures power flowing in both directions?

 

[amberwolf]

Cycle Analyst
http://ebikes.ca

Best part is it can either use your controller's existing shunt, or a standalone shunt, so you don't have to run thick battery wires all the way up to your handlebars to see the display while you ride.

The CA also has many other features you may find a use for.


there are also other bidirectional wattmeters, some of which have been discussed on ES:

https://endless-sphere.com/forums/search.php?keywords=bidirectional+*meter&terms=all&author=&sc=1&sf=all&sr=posts&sk=t&sd=d&st=0&ch=300&t=0&submit=Search

 

[john61ct]

TK15

use keywords like

Ah Coulomb Meter LCD Battery Capacity Power

another
https://www.ebay.com/c/27012040207

check out TY01 as well

watch out for parasitic draw

True "bank monitors" with decent SoC guesstimating are much pricier, look for settings like

charge efficiency factor
temp correction coefficient
Peukert exponent

 

[john61ct]

https://www.ebay.com/itm/DC-1000A-200V-Bidirectional-Current-Voltage-Meter-Battery-Monitor-Shunt-DS/181209321588

 

[jonyjoe303]

I also use the tk15 (cost about 25 dollar for 50A version). Very accurate and measures in both directions, bright lcd display. When charging the display light slowly blinks on/off . when discharging the light is always on, when not charging/discharging light is off.
The lcd screen shows you everything without having to press any buttons.