HAZE EV Batteries

[Burgerman]

Why you want these.
Compared to MK gek.

Considerably better 20h rate Ah. (really 88Ah!)
Considerably better 1h rate (and everything in between too)
Same gel quality and same cycle life @ 500 to 80% DoD (except that because they are bigger Ah your avrage DoD is less so they will last longer in reality)
Same exact case size and terminal.
Cheaper.

Only downside 5mOhm compared to MK gel 4 to 4.5mOhm impedance. I wouldnt use these for sport or agressively programed fast chairs or hills.
Called 80Ah. Actually nearer 90Ah too (87.9). See 20h discharge rate specs.

[foghornleghorn]

All of my use involves up and down hills so maybe harsher than most.

Before the LiFePO4 conversion these Haze batteries were what I was buying. Consistently good for 19 miles a day.

Only problem being end-of-life arrives with a bang. They go very suddenly from being fine to being useless without an obvious period of capacity loss.

[Burgerman]

You are a great candidate for the Lithium you are talking about in the other thread. But some dont need lithium. Want the simple 2 wire charger, no BMS worries etc. So HAZE EV is the way to go.

19 miles a day is unrealistic use for any grp24 lead battery though. So is half of that really, as they just do not last.

Those lithiums in the other thread will give 5x the range with around a full set of MKs worth in reserve. And wont ever likely die at all!
https://www.wheelchairdriver.com/board/ ... =2&t=12484


They are equivelent to a crazy 12x MK gel 74Ah batteries, or 11x Haze 80Ah batteries in watt hours of usable high rate storage.
With around 3000 full cycles in place of 500 to 80% ones. And thats only if you discharge them that much daily. About 100 miles... And you realistically cant! So you will never likely wear out those. And get 10s of thousands of less deep cycles.

Even if you did manage 100 miles every day, you will still have 80% of original rated capacity left some 3000 cycles later. Thats 3k cycles div by 365 days so 8.2 years. And still have 80 mile range capability... Thats still crazy.

When you look at the cost and its the SAME as a set of MK gels, that you can destroy in a year it just makes no sense to go lead!
5 or 6 times the range, 10x the lifespan and same cost!

When the chair manufacturers eventually get with the game they will start offering 70 or 100Ah lithium and completely miss the point! And all the huge gains possible. And already 15 to 20 years too late.

[Burgerman]

Theres also MOVE batteries.
Gel, again, pretty good quality. 76Ah, GRP24, as used by Dietz.

Definitely decent spec as well. 700 cycles.
Have not measure impedance but they seem to work OK albeit on my 4mph chair... So not taxed heavily.

[biscuit]

The 33Ah hzy batteries, I will need again, but I'm not seeing them. Mobility gel batteries seem to have fallen out of favour lately. Maybe they get badly charged & die too soon to remain popular.

[Burgerman]

https://www.zingbatteries.co.uk/mobilit ... tegory=GEL

https://www.mobilityworld.co.uk/product ... ttery-34ah

https://www.mobilityworld.co.uk/pages/s ... =haze%20ev

https://midsummerenergy.co.uk/buy/gel-b ... ah-gel-12V

https://midsummerenergy.co.uk/buy/gel-batteries

[Marcelo]

You are a great candidate for the Lithium you are talking about in the other thread. But some dont need lithium. Want the simple 2 wire charger, no BMS worries etc. So HAZE EV is the way to go.

19 miles a day is unrealistic use for any grp24 lead battery though. So is half of that really, as they just do not last.

Those lithiums in the other thread will give 5x the range with around a full set of MKs worth in reserve. And wont ever likely die at all!
https://www.wheelchairdriver.com/board/ ... =2&t=12484


They are equivelent to a crazy 12x MK gel 74Ah batteries, or 11x Haze 80Ah batteries in watt hours of usable high rate storage.
With around 3000 full cycles in place of 500 to 80% ones. And thats only if you discharge them that much daily. About 100 miles... And you realistically cant! So you will never likely wear out those. And get 10s of thousands of less deep cycles.

Even if you did manage 100 miles every day, you will still have 80% of original rated capacity left some 3000 cycles later. Thats 3k cycles div by 365 days so 8.2 years. And still have 80 mile range capability... Thats still crazy.

When you look at the cost and its the SAME as a set of MK gels, that you can destroy in a year it just makes no sense to go lead!
5 or 6 times the range, 10x the lifespan and same cost!

When the chair manufacturers eventually get with the game they will start offering 70 or 100Ah lithium and completely miss the point! And all the huge gains possible. And already 15 to 20 years too late.

I completely agree bogman Liteo is The Gift I also don't understand why manufacturers don't already make it with a lithium battery.

[Burgerman]

Its because they just do what they always did and theres little if any free market competition to drive it.

When they finally do, it will ievitably be a drop in lithium lead replacement brick option. Of similar limited Ah capacity with a BMS and it will therefore totally miss out of the advantages -- the huge range, longevity, and charge speed that it allows! And they will charge £££$$$ more...