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Thread: Jetbeam i4 PRO Intellicharger Review: Current/Voltage Comparisons for Li-ion & NiMH

  1. #61
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    Default Re: Great review: Hope I don't fry my new batteries.

    Ran one more set through it so far, this time measured with a fluke, got 4.22 on all 4, all were ET 3100 red and white types. Going to run a few more sets through to see if holds true for other brands of batteries. Also noticed that on two batteries, it barely gets warm. On four, this little sucker gets hot, hot enough to make that hot plastic smell we all know. Played with different ways of letting it set, seemed to stay cooler if standing on end. Wife joked could use as a heating pad for sore muscles while charging batteries.
    Keep it between the ditches and the shiny side up.

  2. #62

    Default Re: Great review: Hope I don't fry my new batteries.

    Here is what I'm seeing on my charger. Let them charge and all bars are full. Let them trickle charge for a good while. Remove the 4 batteries and place them back in and it then shows 2 bars and starts charging again. They are 4.2v - 4.2v - 4.19v - 4.2v. They shouldn't need charging after that, let alone be showing only 2 bars.

    Perhaps the charger could possibly going on a type of sleep state after a long amount of time? As the batteries are fully charged and maybe the charger senses it and stops? But it still shouldn't see only 2 bars after resetting the batteries.

    Quote Originally Posted by selfbuilt View Post
    Yes, it is indeed likely to do that - but you should find it terminates again with a matter of seconds to minutes. Given the very low current at termination, this won't affect the overall charge status.

  3. #63

    Default Re: Jetbeam i4 PRO Intellicharger Review: Current/Voltage Comparisons for Li-ion &

    Don't worry about the number of bars -how long does it take for the charger to terminate, ands what it's the voltage? You should find the difference to be negligible.
    Full list of all my reviews: flashlightreviews.ca. Latest hobby: whiskyanalysis.com. New: Selfbuilt's Spring 2018 Sale
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  4. #64

    Default Re: Jetbeam i4 PRO Intellicharger Review: Current/Voltage Comparisons for Li-ion &

    From what I'm seeing is like 5 - 10 minutes after placing them back in. I do notice rolling the batteries sometimes fixes the issue. Again just passing the info along. The voltage was 4.2v - 4.2v - 4.19v - 4.2v.

    Quote Originally Posted by selfbuilt View Post
    Don't worry about the number of bars -how long does it take for the charger to terminate, ands what it's the voltage? You should find the difference to be negligible.

  5. #65

    Default Re: Jetbeam i4 PRO Intellicharger Review: Current/Voltage Comparisons for Li-ion &

    What type of DMM are you all using? Any recommendations for an accurate one at a decent price? I've read 4.24v both on an Eagletac 3400 and an old AW 2200. Both were right off the charger (Jetbeam i4 pro) and felt cool to the touch so I wasn't really worried.

    I'm currently using a cheap radio shack DMM #22-820, so I figured it may be inaccurate.

  6. #66
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    Default Re: Jetbeam i4 PRO Intellicharger Review: Current/Voltage Comparisons for Li-ion &

    Can find someone with a good meter and test yours against it, then if it shows 4.24 and yours the same, yours is good enough. If it shows 4.22 and yours shows 4.24, yours it .02 off. etc etc Can buy a fluke for around a hundred dollars, used ones less. Its an old model, but I picked up a Fluke 23 series 2 for fifty. See 113's going close to 100 or so.
    Keep it between the ditches and the shiny side up.

  7. #67
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    Default Re: Jetbeam i4 PRO Intellicharger Review: Current/Voltage Comparisons for Li-ion &

    Well, two sets of ET and three sets of NCR-A's later and its going back. Odd that the ET lights come out at 4.22, while the NCR-A's came out at 4.23. Either way, still to high so its going back. Will try another, if it doesn't work ill move to another brand.
    Keep it between the ditches and the shiny side up.

  8. #68

    Default Re: Jetbeam i4 PRO Intellicharger Review: Current/Voltage Comparisons for Li-ion & Ni

    Just got my jetbeam i4 pro. My only problem is I bought it overseas and the wall plug is different from ours in the US. So I got this universal ac adapter that is rated 1500mah 1.2a max and I charge using the 12v dc setting. It is for fenix arb l2 batteries for now and later I will get some good aa rechargables for my nitecore ea4. I hope this is ok to use the universal adapter with this charger. Anybodys opinion on this?

  9. #69
    Flashaholic* oKtosiTe's Avatar
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    Default Re: Jetbeam i4 PRO Intellicharger Review: Current/Voltage Comparisons for Li-ion & Ni

    Quote Originally Posted by jred23 View Post
    Just got my jetbeam i4 pro. My only problem is I bought it overseas and the wall plug is different from ours in the US. So I got this universal ac adapter that is rated 1500mah 1.2a max and I charge using the 12v dc setting. It is for fenix arb l2 batteries for now and later I will get some good aa rechargables for my nitecore ea4. I hope this is ok to use the universal adapter with this charger. Anybodys opinion on this?
    I'd say it's unnecessary. I can't say anything about your convertor, but since the regular plug's socket (the one shaped like an infinity sign) on the charger is rated for both 110 and 220/230V outlets, just get a cable with this plug. You can almost certainly get one for under five dollars.
    They are commonly known as "figure eight" or "shotgun" connectors, but they're also referred to as euro-connectors or C7/C8 plugs/sockets respectively. (Disclaimer: I just learnt about this from Wikipedia)



    I ordered my i4 (non-pro) from the UK. The box included a UK cable, so I just went to a local electronics shop and bought a 0.5m cable to replace it.
    Last edited by oKtosiTe; 05-27-2013 at 11:03 AM.

  10. #70

    Default Re: Jetbeam i4 PRO Intellicharger Review: Current/Voltage Comparisons for Li-ion & Ni

    Quote Originally Posted by jred23 View Post
    Just got my jetbeam i4 pro. My only problem is I bought it overseas and the wall plug is different from ours in the US. So I got this universal ac adapter that is rated 1500mah 1.2a max and I charge using the 12v dc setting. It is for fenix arb l2 batteries for now and later I will get some good aa rechargables for my nitecore ea4. I hope this is ok to use the universal adapter with this charger. Anybodys opinion on this?
    Actually, that sounds more like a transformer/converter than just a power adapter. It would be unnecessary, as the i4 pro runs on either 110V or 220/230V. So all you need is replacement cable (as oKtosiTe points out), or a simple travel plug adapter. The latter should also not cost you more than a few dollars.
    Full list of all my reviews: flashlightreviews.ca. Latest hobby: whiskyanalysis.com. New: Selfbuilt's Spring 2018 Sale
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  11. #71

    Default Re: Jetbeam i4 PRO Intellicharger Review: Current/Voltage Comparisons for Li-ion & Ni

    Thanks for your reply. I forgot to mention that I tried a US "figure 8" plug at the local electronics store and it didn't work! I also tried a US plug adaptor and it didn't work either... luckily the other power port worked!! I'm not sure what its called but the other one on back of the jetbeam i4 pro. The back of the adaptor I bought for the charger says:
    Universal AC/DC Adaptor
    Model :PST-15M
    Input :100-240v~ 50/60Hz
    Output :3/4.5/6/7.5/9/12V
    1200mA max

    Since my "figure 8" port isnt working is this ok to use as long as I'm on 12v mode? Sorry I don't have a pic but its nice and compact and only about 9 dollars. I think the brand is Rhino - model PST-15M
    Thanks guys!!!

  12. #72

    Default Re: Jetbeam i4 PRO Intellicharger Review: Current/Voltage Comparisons for Li-ion & Ni

    Thank you oKtosiTe for your help. I failed to mention my "firgure 8" port doesn't even work with travel adapter or even a plain US figure 8 plug.. You think my adaptor will be ok for my batteries? I know it works. But you think its safe? I would exchange my charger but the seller is way too far for me to send it back. Thanks again oKtosiTe!!!

  13. #73
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    Default Re: Jetbeam i4 PRO Intellicharger Review: Current/Voltage Comparisons for Li-ion & Ni

    Thank you for an excellent review. I wanted to order the Nitecore I4 and asked the supplier if it would charge LiFePO4 batteries, but they can't tell me. I know it doesn't say it will, and your figures only show voltages higher (or lower) than the 3.2 volts required, but it would be nice if I could use this charger for these cells as well as the others. It seems from your review that the charger measures terminal voltage to determine the type of cell, which implies it may not be able to detect the 3.2 volts of a LiFePO4 cell, or think it's a Li cell and try to charge it to over 4 volts. Still, it's worth asking, in case you've tried these cells, before I buy the charger. I admit I haven't read all the hundreds of posts, so please forgive me if the answer is already buried there somewhere. I've only just joined this forum.

  14. #74
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    Default Re: Jetbeam i4 PRO Intellicharger Review: Current/Voltage Comparisons for Li-ion & Ni

    In short: it is not possible, you will overcharge the cells.

  15. #75

    Default Re: Jetbeam i4 PRO Intellicharger Review: Current/Voltage Comparisons for Li-ion & Ni

    Quote Originally Posted by wertzius View Post
    In short: it is not possible, you will overcharge the cells.
    That's my understanding as well. I don't see how this charger would be able to distinguish between different types of Li-ions. You would need to get a proper dedicated charge for those lower voltage cells.
    Full list of all my reviews: flashlightreviews.ca. Latest hobby: whiskyanalysis.com. New: Selfbuilt's Spring 2018 Sale
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  16. #76

    Default Re: Jetbeam i4 PRO Intellicharger Review: Current/Voltage Comparisons for Li-ion & Ni

    I'm finding quite difficult to get a manual for the JetBeam intelligent charger i4 Pro I just ordered off Amazon. I wanted to know what the flashing lights meant. I found the answer in the OPs great review, but things like banking and such would be nice to find a manual. I went to customerservice@jetbeamlighting.com after seeing their manual link gave a 404 web error. They replied, ">
    I am sorry, we are not the mfr. Unfortunately, I don't have the answer for you either. Please contact.
    http://www.jetbeamlight.com/Contact.asp " While an honest answer, not a very good one since all I asked for was a manual or at least a description of the blinky lights. So I went to the manufacturer site and no manual online there either, so I emailed them and received this automated reply from Fanny,

    "Dear All,
    I will be out of office from Jan 15,2014 to Feb 9,2014.
    As new order,please contact my colleague Jessie.
    As after-sales service,i will reply you once coming back.
    Best regards"

    Shouldn't be so darn hard to get a manual or description.
    This is exactly what mine looks like... it says "Intellicharger" not the misspelled version...
    http://www.jetbeamlighting.com/image...eam-i4-PRO.jpg



    Image tags removed see Rule #3 Do not Hot Link images. Please host on an image site, Imageshack or similar and repost – Thanks Norm
    Last edited by Norm; 03-18-2014 at 02:17 AM.

  17. #77

    Default Re: Jetbeam i4 PRO Intellicharger Review: Current/Voltage Comparisons for Li-ion & Ni

    The reviews on this site are very detailed and informational.

    I am planning o buy some AW18650 IMR 2000mAh batteries.

    I will be charging two batteries at a time. Do you recommend using the i2 and charge at ~350mA or the i4 and charge at ~750mA?

  18. #78
    Flashaholic* oKtosiTe's Avatar
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    Default Re: Jetbeam i4 PRO Intellicharger Review: Current/Voltage Comparisons for Li-ion & Ni

    Quote Originally Posted by lmh0t3p View Post
    The reviews on this site are very detailed and informational.

    I am planning o buy some AW18650 IMR 2000mAh batteries.

    I will be charging two batteries at a time. Do you recommend using the i2 and charge at ~350mA or the i4 and charge at ~750mA?
    Actually, the i2 charges at 500mA, and the i4 charges at 375mA or 750mA depending on whether paired or unpaired slots are used respectively.
    Both should be completely suitable, but the wait is a bit longer with the lower charge rates. If you'll want to charge more than two cells at a time, the i4 is a good choice.
    If you want more control, have a look at Xtar's offerings.

  19. #79

    Default Re: Jetbeam i4 PRO Intellicharger Review: Current/Voltage Comparisons for Li-ion & Ni

    Thanks for clarifying that. After i posted this, i read about some reliability issues with nitecores and I am getting a little skeptical about them.

    My first pick was the xtar wp2s. I think it is a PILA lookalike for a little cheaper. I haven't heard many complains about that one.
    It should be somewhere in the middle of PILA and Nitecores.

  20. #80
    Flashaholic* oKtosiTe's Avatar
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    Default Re: Jetbeam i4 PRO Intellicharger Review: Current/Voltage Comparisons for Li-ion & Ni

    Quote Originally Posted by lmh0t3p View Post
    Thanks for clarifying that. After i posted this, i read about some reliability issues with nitecores and I am getting a little skeptical about them.

    My first pick was the xtar wp2s. I think it is a PILA lookalike for a little cheaper. I haven't heard many complains about that one.
    It should be somewhere in the middle of PILA and Nitecores.
    It's been on my wishlist for a while, but I recently set my sights on the VP2 instead (neither charges nickel cells BTW).
    That said, my i4 is still serving me well. I regularly top off my four EagleTac 3100s with it without issue.

    Oh, and before I forget:
    Last edited by oKtosiTe; 03-18-2014 at 07:34 AM.

  21. #81

    Default Re: Jetbeam i4 PRO Intellicharger Review: Current/Voltage Comparisons for Li-ion & Ni

    Quote Originally Posted by oKtosiTe View Post
    It's been on my wishlist for a while, but I recently set my sights on the VP2 instead (neither charges nickel cells BTW).
    That said, my i4 is still serving me well. I regularly top off my four EagleTac 3100s with it without issue.

    Oh, and before I forget:



    Cheers, this is one of my favorite forums already based on the quality of content.

    I thought about the VP2 but I prefer the simplicity in wp2s. The components in both should be comparable, but I think the LCD will affect the mileage of the device. WP2S has one less thing that could break, I tend to focus on the weakest links haha.

    On the other hand the LCD could serve as a validator for my DMM.

  22. #82

    Default Re: Jetbeam i4 PRO Intellicharger Review: Current/Voltage Comparisons for Li-ion & Ni

    I ended up getting the i4 Pro from http://www.amazon.com/gp/product/B00...?ie=UTF8&psc=1
    I'll keep a DMM handy and monitor the charging cycles. Hopefully it will last me worth the $17.

  23. #83

    Default Re: Jetbeam i4 PRO Intellicharger Review: Current/Voltage Comparisons for Li-ion & Ni

    I got my charger in the mail today. It showed up in a blue and yellow box and it says "Intellicharger" (not "Interllicharger"). I guess that is why it said V3 on the seller's listing.

    I was wondering how can I figure out which bays are paired?

  24. #84
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    Default Re: Jetbeam i4 PRO Intellicharger Review: Current/Voltage Comparisons for Li-ion & Ni

    Quote Originally Posted by lmh0t3p View Post
    I got my charger in the mail today. It showed up in a blue and yellow box and it says "Intellicharger" (not "Interllicharger"). I guess that is why it said V3 on the seller's listing.

    I was wondering how can I figure out which bays are paired?
    It is easy enough. Start with four empty batteries of the same capacity.
    Charge two batteries in slot 1 and 2, measure the charge time.
    Charge two batteries in slot 1 and 3, measure the charge time again.

    The slowest combination is paired.
    My website with battery, charger, usb reviews, comparisons & information: https://lygte-info.dk/
    Latest addition is multimeter reviews

  25. #85

    Default Re: Jetbeam i4 PRO Intellicharger Review: Current/Voltage Comparisons for Li-ion & Ni

    Thanks, I'll give it a shot.

  26. #86

    Default Re: Jetbeam i4 PRO Intellicharger Review: Current/Voltage Comparisons for Li-ion & Ni

    Slots 1 & 2, 3 & 4 are paired according to the method suggested by HKJ. So, no change besides the correct spelling on the charger.
    Last edited by lmh0t3p; 03-26-2014 at 09:56 PM.

  27. #87
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    Sigh Re: Jetbeam i4 PRO Intellicharger Review: Current/Voltage Comparisons for Li-ion & Ni

    Just received my JETbeam I4 PRO from Amazon/Ebay seller EdisonBright.

    Bay 1 charged to 4.26 volts, Bay 2 to 4.25 volts, Bay 3 to 4.23 volts, and Bay 4 charged to 4.2 volts. When I pulled them off the charger, all four bays were still charging according to the indicator light (two lights solid, one blinking).

    All four Sanyo cells were put in the charger at 3.89 volts and were all tested on a Nitecore P12 prior to charging. The cells in bay 1 and 2 no longer function in my Nitecore P12 (my only 18650 light at the moment).

    Needless to say, I'm quite disappointed with the charger and losing two good 18650 cells. Contacted the seller and hopefully I can exchange it for another brand. At this point, would the Nitecore I4 be a better option or should I go with a completely different charger?

  28. #88
    Flashaholic* oKtosiTe's Avatar
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    Default Re: Jetbeam i4 PRO Intellicharger Review: Current/Voltage Comparisons for Li-ion & Ni

    Quote Originally Posted by pcruz View Post
    Just received my JETbeam I4 PRO from Amazon/Ebay seller EdisonBright.

    Bay 1 charged to 4.26 volts, Bay 2 to 4.25 volts, Bay 3 to 4.23 volts, and Bay 4 charged to 4.2 volts. When I pulled them off the charger, all four bays were still charging according to the indicator light (two lights solid, one blinking).

    All four Sanyo cells were put in the charger at 3.89 volts and were all tested on a Nitecore P12 prior to charging. The cells in bay 1 and 2 no longer function in my Nitecore P12 (my only 18650 light at the moment).

    Needless to say, I'm quite disappointed with the charger and losing two good 18650 cells. Contacted the seller and hopefully I can exchange it for another brand. At this point, would the Nitecore I4 be a better option or should I go with a completely different charger?
    Could the protection on the cells have been tripped? What voltage do all four cells read now?
    If you want a good Li-ion charger, Xtar has a pretty broad offering. Can't say that I've had any issues at all with my Nitecore i4(v2) myself.

  29. #89
    Flashaholic* všlineurheilija's Avatar
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    Default Re: Jetbeam i4 PRO Intellicharger Review: Current/Voltage Comparisons for Li-ion & Ni

    I have noticed with my Nitecore I4 v2 if i put the cells in before i plug the charger in sometimes it refuses to start charging but i think the manual tells you to plug in first so it has power to regognize the batteries?

  30. #90

    Default Re: Jetbeam i4 PRO Intellicharger Review: Current/Voltage Comparisons for Li-ion & Ni

    Hi , since i messed up my intellicharger i4pro main (220v) circuit board , iīd like to know how many amps do i need on the 12v power adapter output.
    It could be 4*375ma/ 2*750ma = 1.5A

    (I need to charge 4 x 18650 batteries)
    Last edited by theOS; 06-22-2015 at 11:00 PM.

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