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Version 8, Good (HKJ test/review confirmed)
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#1 (permalink)      6/28/2015 4:11:40 PM US Central   quote/reply + tips
Ghost.of.Fast.Tech
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+2 details
Version 8, Good (HKJ test/review confirmed)
I know some people, like myself, really want to see a HKJ comprehensive test/review before buying a li-ion charger.

Full review & test results: http://budgetlightforum.com/node/40359

Some quick points

Charge current is about 1350mA

Measurements

• When not connected to power it will drain about 0.4mA from battery.
• Without a battery in the charger it will flash fast red/green when powered.
• Below 1.5 volt the charger will flash red/green and not charge.
• Between 1.5V and 2.2 volt the charger will show red light and charge with 0.10 to 0.14A
• Above 2.2V the charger will use full current.
• When charge is finished the charger will discharge with 0.4mA.
• Charger will restart if voltage drops below 4.1V
• Charger will restart charging after power loss or battery insertion.


Usb output: it can deliver 1A with no problem.
Over 1A it has problems using the full battery capacity, significantly less overall power will be supplied.
Over 1.6A overload protection kicks in.
2.8v low voltage protection. Usb output will be turned off at this point.

TL;DR

Conclusion

The over charge problem from version 7.1 is fixed in this one, this means that it again is a good charger, but only for unprotected 18650 cells. The power bank function can also be useful, but I would have liked a better handling when the battery is running low.


Edited on 10/31/2015 at 10:52 AM. Reason:
I am Not a FastTech staff member.
#2 (permalink)      6/28/2015 4:26:32 PM US Central   quote/reply + tips
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revmp
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Indeed. I posted similar after i received mine awhile back. Thanks for the further confirmation, though!
Similar thing from couple months ago
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#3 (permalink)      6/28/2015 5:14:42 PM US Central   quote/reply + tips
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Vapor
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Interesting something doesn't add up.

"I just measure the trickle in V8.0.
According to my cheap multimeter (Minipa ET-1005) it is 35mA after green LED comes on."

Edited on 6/28/2015 at 5:15 PM. Reason:
Heaven has a wall and strict immigration policies. Hell has open borders.
#4 (permalink)      6/29/2015 7:51:02 PM US Central   quote/reply + tips
Ghost.of.Fast.Tech
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Yeaa, think I'll trust HKJ's tens of thousands of dollars worth of equipment over some random guy with a "cheap multimeter". But of course some defective version 8s could be sent out. With version 7.1 Miller has proven they couldn't even bother to do one simple test. I wouldn't put much faith in their quality control. Always check your li-ion chargers for overcharging yourself.
I am Not a FastTech staff member.
#5 (permalink)      6/29/2015 8:25:16 PM US Central   quote/reply + tips
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Vapor
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Ghost.of.Fast.Tech wrote:

Yeaa, think I'll trust HKJ's tens of thousands of dollars worth of equipment over some random guy with a "cheap multimeter". But of course some defective version 8s could be sent out. With version 7.1 Miller has proven they couldn't even bother to do one simple test. I wouldn't put much faith in their quality control. Always check your li-ion chargers for overcharging yourself.



My thought was maybe FT isn't sending out version 8 at least all the time.

Heaven has a wall and strict immigration policies. Hell has open borders.
#6 (permalink)      6/29/2015 8:44:59 PM US Central   quote/reply + tips
JPBel
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Can also depend of where the measurements were made.

I am sure HKJ made is amps measurements directly in series with the battery.

joaomedina measurement might have been at the USB input where the led(s) and other circuitries still consume power, even if the charging circuit output is disconnected from the battery.
#7 (permalink)      6/30/2015 4:35:48 PM US Central   quote/reply + tips
joaomedina
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I measure this current direct between the charger and the battery i'm not so stupid as you think, I know led's and the board can consume some mA.

BTW, I really don't know this HKJ but I know me. Even with my not so solid knowledge in electronics I know how to read a DMM.
#8 (permalink)      7/1/2015 9:46:55 AM US Central   quote/reply + tips
Ghost.of.Fast.Tech
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Did you open it up to be sure the pcb says version 8?
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#9 (permalink)      7/1/2015 2:40:22 PM US Central   quote/reply + tips
joaomedina
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Yes Ghost.of.Fast.Tech V8.0
#10 (permalink)      7/2/2015 1:40:13 PM US Central   quote/reply + tips
Ghost.of.Fast.Tech
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Would you be willing to leave a battery in the charger after the indicator light turns green for 24 hours or more? Check if it over charges. Just in case, this should be done somewhere safe, away from anything flammable. Garage should be ideal.

One possibility would be if the indicator light turns green before it has actually terminated charge. But from HKJ's testing it should terminate at ~100mA. Could you check the charge current at the beginning? Just to confirm.
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#11 (permalink)      7/17/2015 7:57:48 AM US Central   quote/reply + tips
joaomedina
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I just leave a brand new he2 there for around 10 hours, the voltage after this was 4.16v, just 0.01v above the voltage after the green led came on.

I think my measure is interfering with the charger, at the begging of charge it measure just 100mA. Probably the internal DMM resistance plus the battery.