Showing posts with label clamp. Show all posts
Showing posts with label clamp. Show all posts

Thursday, February 27, 2014

Nissan LEAF Battery Pouch Cells - Fire and Destruction Tests

In a LEAF Battery Module are 4 pouches, and these seem to be very tough !

- DON'T TRY THIS AT HOME -



- DON'T TRY THIS AT HOME -


"A used battery form Nissan Leaf 3.8V 33Ah, tested for how likely to catch fire when is destroyed or in flames. We had no success make it burn. Same battery after the burn test was charged/discharged twice at 1/3C - 10A - it has 30Ah capacity remaining. Before the test this cell was under salty water for 2 hours - you can see the contact are destroyed."














- DON'T TRY THIS AT HOME -

Saturday, December 7, 2013

DIY ESS - Pairing a Second Transmitter on a Wattson

I thought about this maybe a year ago and was not sure it could be done until I read more about Wattson and its capabilities: It can get signals from up to 10 (!) Transmitters

The idea here is to send Generation Power from different locations:
- First, the generation info from the Solar Installation
- Second, the DIY ESS - Energy Storage System - output generation
These two add up automatically as long as they are paired to the same Wattson display unit... => Cool !



On the pictures, you recognize the white Wattson that is already paired to my Solar Installation + ESS (off at this moment)
To be able to compare values, I brought the Silver Wattson upstairs;  It is showing Solar generation only
After pairing the second Transmitter you can see on the floor here, and plugging in a clamp/CT into the generation inlet of the Transmitter, this new "Generation" adds up to the Solar Generation, meaning we can now have a clamp + additional Transmitter directly in the DIY ESS to measure the ESS only Generation and no additional outlet to install in the Solar sub-panel / junction box - like I did with my Solar contractor -



Using Generation inlet only

For testing purpose here I am measuring a small load from few lamps - LED of course -, from my home made Easyfit Y Cable from few weeks ago

On the left, the white Wattson adds up the 2 Generation signals it receives from the 2 Transmitters,  and on the right, the Silver Wattson displays the Solar Generation only

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