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Unread 01-30-2019, 10:05 AM   #11
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Default Re: Lithium charging options...

Brand: YZ Power
Model #/Part #: YZ450
DC output Amps w/ 110v input: 10a
Cost: $54.00
Where purchased:Ebay
Any Pros/cons: Cheap and performs the task
Would you get it again: Yes
http://www.ebay.com/itm/283303233298

Since I stayed 36v for now, I needed to source a 42v charger that would push more than a few amps. I chose YZ Power because when I told them I was okay with voiding the warranty to turn it down to 41v, they offered to set it for me before it shipped out. This unit actually pushes about 11 amps, has dual fans, aluminum body, and charges to 40.9 volts. So far, it is working flawlessly.
I should also mention that this is just a basic charger and will not communicate with a electronic BMS.
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Unread 01-30-2019, 10:07 AM   #12
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Default Re: Lithium charging options...

Quote:
Originally Posted by MCJEFE View Post
Brand: Waouks (china)
Model #/Part #: 58.4V 10 amp
DC output Amps w/ 110v input: 10.4 (actual)
Cost: $90
Where purchased: Amazon (link below)
Any Pros/cons: Not CAN bus enabled, inexpensive, it stops at 58.4 exactly.
Would you get it again? If quick charging is not a requirement and overnight charging is the norm this is a good option. I would buy again, if it were in stock...

58.4V 10A Charger 58.4V LiFePO4 Battery Smart Charger Used for 16S 48V LiFePO4 Battery High Power https://www.amazon.com/dp/B07CXQBQ8D..._1aGtCb51JQE3W

Sent from my SM-G960U using Tapatalk
I found the cliff on the discharge curve yesterday and underestimated how fast it discharges once you reach 3.6v.

Completed the first complete charge last night and it took between 11-12 hours by my estimate. I checked the pack voltage every 30 min for the first 10 hours, then I went to bed... It was outputting 9.4 amps and charging a consistent 8% per hour bulk charging until it tapered off at the end.

This is a good charger for less than $100. I would recommend for anyone on a budget or is fine charging overnight. Charging a 7 module 60 ah pack expect 5-6 hours to charge, 14 module 120 ah expect 11-12 hours.

Personally I will be looking for something larger/faster for my second 120 ah pack.


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Unread 01-30-2019, 10:23 AM   #13
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Default Re: Lithium charging options...

Quote:
Originally Posted by MCJEFE View Post
I found the cliff on the discharge curve yesterday and underestimated how fast it discharges once you reach 3.6v.

Completed the first complete charge last night and it took between 11-12 hours by my estimate. I checked the pack voltage every 30 min for the first 10 hours, then I went to bed... It was outputting 9.4 amps and charging a consistent 8% per hour bulk charging until it tapered off at the end.

This is a good charger for less than $100. I would recommend for anyone on a budget or is fine charging overnight. Charging a 7 module 60 ah pack expect 5-6 hours to charge, 14 module 120 ah expect 11-12 hours.

Personally I will be looking for something larger/faster for my second 120 ah pack.


Sent from my SM-G960U using Tapatalk
I think my modules are around 40 ah capacity at this point in their lives which puts me close to 120 ah total, I agree that 10 amps charging is painfully slow. Iíve only taken mine down to 3.7v per cell, like you said thereís just not a lot after 3.65.
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Unread 01-30-2019, 12:17 PM   #14
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Default Re: Lithium charging options...

Quote:
Originally Posted by MCJEFE View Post
I found the cliff on the discharge curve yesterday and underestimated how fast it discharges once you reach 3.6v.
You didn't mention how low you let the cells go down to. I hope your batteries didn't do a permanent "I'm dead now" on you.
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Unread 01-30-2019, 07:28 PM   #15
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Default Re: Lithium charging options...

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You didn't mention how low you let the cells go down to. I hope your batteries didn't do a permanent "I'm dead now" on you.
Nope they are all just fine. I need to say that the only reason I was this low in the first place was that I was trying to run down the pack to see how long a "full" charge would take. Once I hit the "discharge cliff" it went faster than I expected and little a** hill kicked my butt.

I had 150' of moderate hill to get over then just a measly 1/4 mile downhill to home. Pride would not let me call my wife to come with the tow rope this close to home....
I could make it about 10-15' when the low cell voltage would trip and shut down the cart just like I planned for it to (MinV was set to 3.5)... #$%&!!!

I grabbed my phone and looked up Nick's Discharge chart on EV's website. Then I set MinV to 3.25 and tried it but only made it 20' before the load would pull them below the threshold. Reset it to 2.90 and gingerly eased it over the hill and putted home. Got home and the avg cell voltage was around 3.24v. My MinV is now set at 3.4v.

I previously had a label for my wife that said "Charge before 48.2v" That was a little misleading.

The label now says "30% Go Home / 20% Empty/Charge"

This what I plan to tell people:

30% - Safely have enough to go at least 3-5 miles.

25% - Low Voltage warning will alert in case someone isn't paying attention.

20% The tank is on fumes find the nearest outlet and use the 50' cord under the seat.

Realty is that it will typically be on the charger before it gets to 40%. At 20% I was about still 3 miles before a cell caused LV shutdown during an acceleration uphill.

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Unread 01-30-2019, 09:01 PM   #16
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Default Re: Lithium charging options...

Love the "memo"!!
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Unread 02-05-2019, 11:05 AM   #17
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Default Re: Lithium charging options...

Just to update this thread, I was previously ask what the charging amps were when I plugged in my ElCon charger. Well....here ya go!!

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Unread 02-05-2019, 11:10 AM   #18
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Default Re: Lithium charging options...

Yep, 1.8kW DC output at 220VAC or 0.8kW DC output at 120VAC
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Unread 02-06-2019, 12:49 AM   #19
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Default Re: Lithium charging options...

Quote:
Originally Posted by DaveTM View Post
Just to update this thread, I was previously ask what the charging amps were when I plugged in my ElCon charger. Well....here ya go!!



It always helps to see real world info.

Thanks!

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Unread 02-27-2019, 04:32 PM   #20
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Default Re: Lithium charging options...

Quote:
Originally Posted by DaveTM View Post
I have the ElCON TC 1800W charger. http://evcomponents.com/elcon-tc-hk-...w-charger.html

If memory serves me right, mine is set to charge at 16amps. I have it set up with CanBUS interface so I can make the charging settings using my ZEVA BMS.

Cost: $225 (Don't buy from China as they cannot program for CanBus)
Pros\Cons: It works like it should. Charging is faster than my old FLA's. Cons....none that I can complain about.
Would I buy it again? Yes. Absolutely. Why?....because I can change the settings of the charger from my BMS monitor. I'm a control freak and like that option.

Dave
I have searched and only seem to come up with vendors in China selling that charger. What domestic vendors are selling the Elcon's
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