Adding external charger to hybrid battery.

[HeyBales]

Why not just use a tender every night?

Not sure which post you are commenting on, OP talking about the HVB, or this most recent comment.
As noted in post before yours - that is also about the HVB.

No battery tender helping in either case.

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[Mavster Mechanic]

What I would like explained, is why I will sometimes shut the truck off with the state of charge as reported by my ScanGauge at 65%, and in the morning it’s reading 70%

Temperature change does this.

Parking cool and coming back at a warmer time you'll see higher SOC.

Reverse is true too. Park warm and come back cool or cold and SOC reported has dropped.

 

[Ranko Kohime]

Temperature change does this.

Parking cool and coming back at a warmer time you'll see higher SOC.

Reverse is true too. Park warm and come back cool or cold and SOC reported has dropped.

I’m experiencing the inverse, battery coolant and ambient temperatures are both lower in the morning than when stopping for the night, and yet SoC occasionally rises.

Now the times it does fall, it will fall a LOT. As in not explainable other than it is kicking in the HV circuit when it should be off. I may park with 50%, and start the morning with a forced ICE cycle due to battery being at 33%, which appears to be the forcing level.

 

[Escapologist]

A full charge won’t leave room for regen so the brakes will feel weird at fist. The battery is pretty small in the hybrid mav so even if you did you might only get 3-5 miles and regardless of charge, the engine will start once you pull more than about 80 amps. You would need a very very light foot to stay in EV mode.
We have a plug in escape. It gets between 30 and 40 miles ev range, but the mav battery and the controls are much different. It would take more than a plug in charger to make it worth the effort. I really wish ford would have offered a plug in option.

Yeah I thought it would be easier to stay on electric, given practice on our Escape PHEV after "wall juice" depleted, but I think it's got a but more power available and larger HEV capacity... plus you can regen into main bit of batt still.

Works best in city traffic when you're limited to the acceleration of trucks and busses and ppl are mad at them and not you for setting off so slow

 

[HeyBales]

I’m experiencing the inverse, battery coolant and ambient temperatures are both lower in the morning than when stopping for the night, and yet SoC occasionally rises.

Now the times it does fall, it will fall a LOT. As in not explainable other than it is kicking in the HV circuit when it should be off. I may park with 50%, and start the morning with a forced ICE cycle due to battery being at 33%, which appears to be the forcing level.

Small adjustments due to difference between ending calculated reading, and starting real reading is one thing.

But the HV circuit should require the key to On to be enabled.
Unless you are doing that accidentally.

If really losing that much overnight - get it in quick for warranty work - that's potentially dangerous.
Besides not great for the battery anyway even if it's not discharging to something but only a battery issue.

Get some before/after pictures to show this, if you can't figure out the steps to cause it or there are none.

 

[Headbanger]

Not sure which post you are commenting on, OP talking about the HVB, or this most recent comment.
As noted in post before yours - that is also about the HVB.

No battery tender helping in either case.

I see.
These vehicles weren’t designed to be plugged in. Why even entertain the idea? Just asking for trouble.

 

[rk06382]

I see.
These vehicles weren’t designed to be plugged in. Why even entertain the idea? Just asking for trouble.

I agree. My Maverick ain't broke so, don't fix it.

The Lithium Ion (li-Ion) Traction Battery has only a 1.1 kWh Capacity. I have six 1kWh LiFePO4 Deep Cycle Batteries in my FR3 motorhomes solar power system.

The local Electric company electricity rates are around 25 cents per kWh (Kilo Watt Hour)

That means the Maverick 1.1 kWh Traction Battery holds about $0.28.

 

[Ranko Kohime]

I see.
These vehicles weren’t designed to be plugged in. Why even entertain the idea? Just asking for trouble.

I mean, in those rare cases (my aforementioned Prius with a dead engine), it can be helpful, but it's a decidedly narrow use case.

Incidentally, if anyone does try that, get out your volt meter, measure the exact voltage of the battery to the hundredths, then set your power supply to the same, and connect while ON. Most bench supplies have a drain resistor which discharges the caps when deactivated, which can make for quite the light show if you try to connect when off.

 

[wavok]

I wonder if it's possible to remove the parts from a wrecked Escape Hybrid and convert a Maverick. I'm sure it's not an easy thing to do but I see videos of people doing some crazy stuff to cars and it doesn't seem like this would be any worse.

You should do that! I would totally watch that video and day dream!

 

[Mavster Mechanic]

Now I'm going to contradict myself.
(I hate it when I do that....)

Today I parked at 65% SOC showing at 45°F ambient. But battery was 85°F AFTER a one hour drive.

Came out 9 hours later. Still 45°F ambient. Battery 50°F.

70.2% SOC showing.

 

[HeyBales]

Now I'm going to contradict myself.
(I hate it when I do that....)

Today I parked at 65% SOC showing at 45°F ambient. But battery was 85°F AFTER a one hour drive.

Came out 9 hours later. Still 45°F ambient. Battery 50°F.

70.2% SOC showing.

So maybe their calculated SOC while you are driving doesn't actually take into account battery temp?

They obviously take it into account on the charge/discharge rates allowed.

Did you get the extra long EV bar on take-off?
I still can't figure out how to make that happen - sometimes I'm at 55% SOC, sometimes 70%.
Sometimes parked for 8 hrs, some 3, sometimes 30 min or less when I stop by my moms.

Now I'll need to start noting the ending & starting SOC - for science.
Done that for 12VB of course.

 

[Mavster Mechanic]

So maybe their calculated SOC while you are driving doesn't actually take into account battery temp?

They obviously take it into account on the charge/discharge rates allowed.

Did you get the extra long EV bar on take-off?
I still can't figure out how to make that happen - sometimes I'm at 55% SOC, sometimes 70%.
Sometimes parked for 8 hrs, some 3, sometimes 30 min or less when I stop by my moms.

Now I'll need to start noting the ending & starting SOC - for science.
Done that for 12VB of course.

The extra long blue bar happens at 65% SOC and above.

It may be proportional not an exact value. IE 70% may be a longer bar than 68%.

Since I park at the bottom of a hill I see it almost every day.

 

[Escapologist]

Hmmm, haven't seen an extra long blue yet, but then I didn't have many miles on before it went cool and then cold.

 

[Mavster Mechanic]

Hmmm, haven't seen an extra long blue yet, but then I didn't have many miles on before it went cool and then cold.

Not related to temperature.

It is based on really high charge which usually happens only after a long episode of regen charging. Then you have to turn the truck off and back on. Then it only persists for several seconds. Easy to overlook.

But we do get double the EV power for a short time indicating they really don't want the battery to stay highly charged for very long.

 

[Ranko Kohime]

But we do get double the EV power for a short time indicating they really don't want the battery to stay highly charged for very long.

Sounds like exactly the time to waste a bunch of energy when parked doing some emissions junk, but no, it does that when the HVB SoC is already low.

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