Thread: EV general discussion

Originally Posted by RANDLOVER

Lots of safety experts recommend a Safety Glass Breaker Emergency Hammer Belt Cutter Car House (evaculife.com.au) even for ICE vehicles.

Good idea. I have had two but never used in anger. Maybe they are dodgy ?

Just buy a spring loaded centre punch.
Far more effective.

Originally Posted by Tombie

Just buy a spring loaded centre punch.
Far more effective.

Or one of these:

Originally Posted by Arapiles

Or one of these:

🤣 akin to the force we use on a slap to kill a mosquito

Originally Posted by Colmoore

🤣 akin to the force we use on a slap to kill a mosquito

Really? My understanding is that bike thieves use these to smash U-bolts.

Edit:

Like this:

[620] Ramset vs. 1/2” Hardened Steel Shackle (TriMax Max 40 Motorcycle Lock) - YouTube

And this:

[557] "World's Toughest Motorcycle Lock" vs. Ramset - YouTube

Battery balancing surprise yesterday. Plugged in to see the FAST and watched slow. Battery Banks out of whack are a known issue.

BMS systems are interesting. The BMS in the Prior EV was not as involved as this new one.




BYD version is possibly a bit better.




The Charge rate on the ULTRA Fast Charger "350-475kW"

My car slowed it to less than 50kW. IF I had been charging at home via the cars 2kW or the 7kW charge it would have occurred without me noticing.

I would like to be able to schedule this. Yesterday I was not in a hurry. If I was on a long trip I could be caught with an unwanted extra time to do it.

Originally Posted by Arapiles

Really? My understanding is that bike thieves use these to smash U-bolts.

Edit:

Like this:

[620] Ramset vs. 1/2” Hardened Steel Shackle (TriMax Max 40 Motorcycle Lock) - YouTube

And this:

[557] "World's Toughest Motorcycle Lock" vs. Ramset - YouTube

My mosquito analogy wasn’t comment on lack of power, actually quite the opposite: we generally use 100’s of times additional force when slapping a fly/mozzie; mostly because it’s more satisfying (except when they land in the region of your groin 🥺&#129315

The Ramset gun is very heavy in comparison with a spring actuated punch, which will do the same thing to toughened glass, not to mention you need dry charges and the noise inside a vehicle would be hideous

Originally Posted by NavyDiver

Battery balancing surprise yesterday. Plugged in to see the FAST and watched slow. Battery Banks out of whack are a known issue.

BMS systems are interesting. The BMS in the Prior EV was not as involved as this new one.




BYD version is possibly a bit better.




The Charge rate on the ULTRA Fast Charger "350-475kW"

My car slowed it to less than 50kW. IF I had been charging at home via the cars 2kW or the 7kW charge it would have occurred without me noticing.

I would like to be able to schedule this. Yesterday I was not in a hurry. If I was on a long trip I could be caught with an unwanted extra time to do it.

Tesla recommend to charge LFP to 100 weekly. I'm sure there is cell balancing in play - but everything I've read is it's more because LFP batteries operate in a very small voltage range, so they can't just use voltage to give an estimated battery percentage. So they kind of keep track of incomings and outgoings which may drift in time. So what they are trying to prevent is cars stopping with say 15% indicated charge.

By charging to 100 they are calibrating the BMS. LFP don't mind being fully charged hence the recommendation.

There is chatter that if you aren't too worried about the accuracy of the battery gauge you can probably leave it a bit longer.

We don't drive that much so we'll probably leave it a little longer and just charge regularly to 75. Whenever I have charged to 100% the KW put in has matched the battery gauge precisely. So I don't think it's out much if at all. When the sun is out I just plug it in and tell it to charge slowly to a max of 75. If we are doing a big trip I'll give it a 100% the night before.