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The Grasshopper

Discussion in 'Portable Vaporizers' started by midgetsanchez, Jun 8, 2015.

  1. MountainManGuy

    MountainManGuy Member

    Messages:
    16
    So I was the user who posted that video on reddit. I tried my hopper in another port that is capable of up to 3 amps output and found the my hoppers OEM charger will fluctuate up to 2 amps at times. Towards the end of the charging cycle the battery charges up to 1.65 ish amps. Point is, it's much high than the 500 mA rating I've seen people post.
     
  2. MoltenTiger

    MoltenTiger Well-Known Member

    Messages:
    1,146
    Location:
    Down down under
    Thanks for testing, I should have referenced your reddit post.
    So whatever the OEM charger does, it's either made to do a custom charging pattern specifically for the GH battery or it's an inferior option.
    Given that we don't know the battery chemistry there's no way to know, but we do know for sure that CC charging at 0.8C is the most recommendable rate for general Li-ion, which is 0.6A for the GHBs.
    It's unlikely that CC (constant current) charging is worse than variable rate charging for GHBs as HL's recommended external charger does a 0.5A CC rate.

    This info gets blurred over all the time, so to put it in laymen's terms - my annual battery budget of $35 won't hold up with rapid rate charging (So far I've spent over double this on batteries in 12 months and spent a long while charging at 1A).
    It's possible GHB2s are that much superior that the performance benefit I'm currently seeing charging at half that rate over half that time is solely due to their increased quality, but I doubt it. If anything the revision would yield better capacity averages from these mixed bin batts, and at least half of my 8 dead batteries were comparable to the GHB2 experience.

    Battery cost alone negates any real benefit to babying the GHBs, but for those who must pay an international premium (Cost+exchange rate/shipping) it's worth attempting to save a bit of money without doing anything other than using cheap and quality goods. Relying on a charger that has gone through multiple revisions and still shows the same problematic symptoms that I have experienced first hand and caused a warranty replacement is also an option.

    Every charging option works and is viable, some methods will simply cost more.
    It's going to be less than $100 difference so who cares?
    Some might, so they may as well see the facts.
    I prefer bud in my jars to wasting money on shitty charges and shitty batteries, so far it's been over $100 for me on both those things. That's about all I'd change in my hopper life, pocket that money and rock the Xtar from the get go
     
    Last edited: Mar 19, 2017
  3. Hogni

    Hogni Honi soit qui mal y pense

    Messages:
    1,340
    Location:
    Berlin, Germany
    Short advice for european customers:

    'Verdampftnochmal' actually seems not to have any Hoppers in stock. But the days I saw some ss ones at "Klaus der Gärtner" Still not listed online but in stock for 238 €!
     
  4. almost there

    almost there Well-Known Member

    Messages:
    588
    I'm sorry for posting so many questions but I just noticed my hopper makes buzzing clicking noises. Perhaps this was always the case and finally caught my attention but is this normal? I haven't come across any postings of this on this thread, maybe I missed it? It's pretty loud now that I hear it, much more so than the buzzing of the IQ or Pax
     
  5. MoltenTiger

    MoltenTiger Well-Known Member

    Messages:
    1,146
    Location:
    Down down under
    Yeah that's totally normal, it's caused by the PWM (pulse width modulation) in the circuitry and is apparently one meaning/reason behind the name change from Zen Pen to Grasshopper

    This is just a standard temp spectrum for normal/safe operation of Li-ion batteries.
    HL recommend keeping the unit warm (mainly the batteries) and promote using it in cold conditions.

    Worth pointing out that if it is seriously below freezing, you could use chemical hand warmers to keep the batteries and/or device at a usable temp
     
    Last edited: Mar 19, 2017
  6. vapviking

    vapviking Well-Known Member

    Messages:
    1,509
    Location:
    USA
    Clicking is normal though it will be louder and softer at different times.
     
  7. biohacker

    biohacker Fucking Combustion Since 2006

    Messages:
    5,700
    That's weird, i've never NOT seen 4.2v after a full charge with my D4, and that goes for both GHB1 and GHB2 batteries. I usually throw them on there around 3.8v give or take.

    Yeah, for now!
     
  8. voodoo_vape

    voodoo_vape Vapour RebeL

    Messages:
    284
    Location:
    Athens, GR
    My bad.. Probably I didn't put it correctly.

    What I meant to say was that I've never seen a 4.2V charged battery since whenever I've put it back right after being charged, it shows 4.16-4.18 and it always looks like it needs a bit more charging. I take this one as the "small buffer" needed for its battery. There must be a reason that the D4 doesn't fill them up to the top. Like tyres more or less I assume.. If you over pump'em, they may as well explode :p
     
  9. MountainManGuy

    MountainManGuy Member

    Messages:
    16
    This. I second this. My XTAR MC1 is fantastic and charges the batteries at a safe speed (just under .5 amps). I do not think variable charging up to 2 amps is good for the life of these batteries.

    Got a XTAR MC2 on the way as well and that charger will prolly be my daily driver.

    Also, I reached out to hopper labs via email about this a couple weeks ago, and Caroline told me to keep an eye out on an upcoming blog post regarding the charger, so maybe we'll get a little more insight on this soon.

    Edit: Lastly, if you're reading this DO NOT BUY the olight UC magnetic charger!! I've been trying to use that charger for my hopper batts and I've had 2 of those chargers fail on me now. They don't even last a week. DO NOT BUY Olight UC for Hopper batteries!!
     
  10. biohacker

    biohacker Fucking Combustion Since 2006

    Messages:
    5,700
    I don't know man, are you sure your charger isn't defective? Mine charge to 4.2v every single time, and if I take them off and put them back on they say 4.2v as well. They only drop .1v or .2v after they have been sitting for a while.
     
  11. JCat

    JCat Well-Known Member

    Messages:
    1,603
    Location:
    Ontario
    What are you testing the 4.2V with? A separate meter or the charger's built-in meter? My Nitecore D2 always says 4.20 too, but haven't checked them yet on a separate meter ... maybe I'll do that today ...
     
  12. biohacker

    biohacker Fucking Combustion Since 2006

    Messages:
    5,700
    What the charger is displaying...as @voodoo_vape was doing.
     
    JCat likes this.
  13. JCat

    JCat Well-Known Member

    Messages:
    1,603
    Location:
    Ontario
    I think perhaps to eliminate all variables one would have to use an external meter (or maybe not ... if the meter has a guaranteed accuracy ... ie. +/- .01V ... then that would give you a good idea)

    Eg. If the meter accuracy is +/-.01V and it shows 4.20 then you could say it is charged between 4.19-4.21V
     
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  14. JCat

    JCat Well-Known Member

    Messages:
    1,603
    Location:
    Ontario
    Ok ... so after having 2 different hoppers (one SS brand new, and one Ti from @biohacker) ... and used them for combined a few weeks anyways, I feel I can give a proper review.

    First of all, they are fantastic devices when they work (as has been said by many). They are also very versatile and work well as an out-and-about portable as well as a heavy hitting home vaporizer (and also the in-between as a hard-hitting portable if using something like a small 14mm hydratube or even something more simple for cooling).

    As a home vape, when used through water or even waterless through a water tool, it can easily finish a chamber in 1-5 hits depending on the size of chamber, lungs, etc. It can hit hard and fast. Very efficient and instantaneous. Flavor in my opinion is on-par with that of other high quality vapes such as the EVO. Can produce very dense clouds.

    As a portable, I used starting at 3 and moving to 4 and it works wonderfully. You have to be careful as it can get quite hot on the mouthpiece and the vapor coming out, but it's quite ok if you manage it through length and strength of your draw. I do find the Ti has a bit of an edge here as well with the mouthpiece not being as hot. The ability for it to be pretty much instantly ready, and then pocketable after a hit is great. I was in Toronto this past week, and it was nice to take a few hits sometimes between locations such as leaving the museum and the 2 minute walk to the bus w/ my kids. It's very discrete, and since the bus was there pretty much immediately, I was able to put it back in my pocket to finish after (which I did after the bus and subway between the subway terminal and walking into the restaurant). So as a portable, it hits quite hard, and is very convenient in a lot of ways.

    Now on to the not so good stuff ....

    1. Loading and emptying is a bit of a pain. I miss the convenience of the Mighty/Crafty capsules! :) ... I don't know what I would do without @Ratchett 's awesome funnel. Thanks @Ratchett! I also love the leather case and the spiral stand :)

    2. Questionable reliability and erratic behavior leading to high maintenance is a big problem. I sent my SS after about 1 week of use ... it always had a hot back-end. When I got the Ti, I realized that it was also under-performing a little so sent it in. My Ti, worked wonderfully for about a week+, and then started to have some issues. Sometimes not seeming to get hot enough, rough power button on back ... just not smooth. Sometimes the back-end would get hot, or the whole thing a bit. This deteriorated to where I'd say it was performing at about 40% over my vacation. It would at this point have the rapid flashing blue lights and going to flashing red before even finishing a bowl on a fresh battery. The irony is, that at 40% performance, using at 4-5 as portable and at 5 at home w/ single session per battery, it was still what I primarily used over my Mighty and Crafty that I also had with me. The convenience is outstanding, and the performance at 40% even is still quite good :lol: ... not what it can be though! Wasn't able to milk my little bubbler up but still gave nice clouds and had quite acceptable, but could be better, performance as portable. It was maybe at 60+% at the start of the week and down to 40% by the end. I tried all kinds of things, rotating knob, rotating switch, cleaning everything, cleaning everything again, nothing worked. Yesterday when I got home used some Cdn Tire version of blu-tac and rotated my back clicker switch, and it seems to be working about 80-90% now!!! :lol: ... the switch seems to have smoothed out though ... maybe it fell into the correct "groove"? Who knows. Anyway ... like I was saying ... questionable reliability and erratic behavior leading to high maintenance!


    Now about warranty ... good and bad ... overall a pretty decent experience, but they messed one critical thing up which kinda' soured the whole experience. I sent my hopper in, and it took 2 business days to get there. $25 CAD approximately. Pretty good! Would have expected 5 days, but 2 is bonus! (I'm really in the middle of nowhere so things take 2 days just to get to Toronto) They had it for 3 days for replacement of back-end and testing before it was shipped. So far at this point they are 1 week + a day from my door to on my way back to me. Since I indicated the problem with the lengthy untrackable shipping, and I had only had a week or so use of my hopper and it was already back for repair, Caroline had graciously offered to ship it back UPS instead of USPS. Unfortunately I guess they made a mistake and sent @biohacker 's back to him UPS and mine back USPS; so .... I guess this means that the first part took 6 business days and now I can expect to wait 10 business days or more to get it back. Should have been gone <2 weeks, now it will be gone likely 3 or more :(

    So ... that's a lot of good and a lot of bad ... I do feel that they can get these erratic performance and reliability issues sorted out eventually; I truly hope so anyways. I think a lot of the problems are with maintaining solid conductivity in the back end and making that back-end robust. Would be interesting to test the performance of a degraded one without a back end (ie. short the negative battery terminal to the case). I do think that instructions and support for removing the oven screen will be required in order to minimize warranty claims which when too frequent will lose you customers (lifetime warranty or not ... it's the inconvenience). Light users might not need to remove this screen, but even if I only use as a portable and when out of Town, I can see the need to remove and clean under there at least a couple times a year (although a week out of town equals 1/2oz of cannabis vaped through it or so .... so .... even used as a portable/travel vape for me it will see quite a bit of usage)

    I could go on more ... but I think that about covers it!
     
    Last edited: Mar 19, 2017
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  15. MonkeyTime

    MonkeyTime Well-Known Member

    Messages:
    516
    Location:
    WI
    As far as the batteries go, they're all over the place right out of the box.

    I tested 5 of my 6 batteries (couldn't resist throwing one in immediately) and ran them thru a discharge/charge/test cycle on my Opus C3400 (current at the time V3.1) and got drastically different results. All ended up charging between 4.10 and 4.19V, and those numbers from the charger matched my meter.

    I've tried different chargers, but none of them exceed what I found new. They were all GHB2's and to this day degrade slowly and pretty consistently within the group.

    My problem has always been that my unit seems to run cooler than most and around 3.85V I have to switch them out if I want to fully extract. For the first time since I've had it, I've used it for my daily driver at home (still don't trust or have the patience for it mobile) over the last two weeks, and it's dying slowly, but very clearly.

    For me, the only benefit it has is it's size. The batteries don't work for my usage, I can't stomach having to bring all 4-6 with me for a long evening out. The back end gets silly hot and is getting hotter day by day as it breaks down and the vapor is hot enough that I prefer it thru a small piece of glass like the @DDave Mi V2 cooler.

    To me, this thing is the hottest girl in the room that after a while, isn't worth putting up with :shrug:

    Depending on what Vapexhale is working on and the forthcoming Haze Square, I'll be ready and willing to try the GH v2!
     
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  16. voodoo_vape

    voodoo_vape Vapour RebeL

    Messages:
    284
    Location:
    Athens, GR
    @biohacker from what you're telling me man I'm probably having an ineffective nitecore, but then again it's charging the batteries just fine. I think that there were some other users having the same situation like mine. I didn't think of it as a flaw or sth.. I'm able to pull 2 max 3 bowls with my batteries.. if I finish my bowls off with a T5 a rip, then I'll probably get two proper bowls, otherwise if I finish them at T4 I will get 3 of them..
     
    biohacker likes this.
  17. biohacker

    biohacker Fucking Combustion Since 2006

    Messages:
    5,700
    All good bro, I was just reporting my own personal findings that my D4 charges (or at least displays) 4.2v. Every time.
     
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  18. duff

    duff Well worn

    Messages:
    847
    Thorough write-up @JCat.
    Agree with just about everything you mentioned.

    I should get mine back today.
    HL said they replaced some internal parts.
    When I asked for more details they said that they can't tell me.
     
    GreenHopper, Vapor_Eyes, JCat and 2 others like this.
  19. almost there

    almost there Well-Known Member

    Messages:
    588
    Why does this sound like conversations I have with my 6yo nephew? All these magical mysterious things,it just can't be elaborated on but it's all true and all of it will happen tomorrow:hmm:
     
    Last edited: Mar 20, 2017
    GreenHopper, duff and muunch like this.
  20. guyonthecouch

    guyonthecouch Well-Known Member

    Messages:
    128
    GAME CHANGER ALERT: So I took a play out of the vapcap book and have started using hemp fiber in my hopper chamber. Using it as a spacer with less material as well as "blocker/pre screen-screen". Since using I haven't cleaned my front end once. Maintains a fresh clean state with ease. Also, noticing my glass is staying MUCH cleaner for longer. Not sure how much of the goodies are getting "trapped" in the fiber(if any).. seems to be working its magic just fine though. Flavour seems to last longer throughout the bowl. On the higher heat settings, it feels cleaner/less harsh and seems to not "smoulder" as much(material pushed up against the fiber rather than the SS front end screen). IMO, resulting in an all around more pleasant experience.

    Currently the best method I've come across to use concentrates on their own as well. Great flavour and long lasting bowls.

    If you own a Hopper i highly suggest implementing this into your routine.
     
  21. Mr. Me2

    Mr. Me2 Well-Known Member

    Messages:
    2,073
    Are you putting the hemp in the mouthpiece?
     
  22. guyonthecouch

    guyonthecouch Well-Known Member

    Messages:
    128
    @Mr. Me2
    No, I'm placing it directly in the chamber on top of the material. Make sure there's no danglers to get stuck in the threading and then screw the front end on.
     
    Last edited: Mar 20, 2017
  23. almost there

    almost there Well-Known Member

    Messages:
    588
    sounds like a lot of work to me, is it so? The abv comes out a bit stickier from the hopper than the vapcap, it's a bit gummy along the edges, are there lots of particles stuck to the hemp fiber after each use?
     
  24. guyonthecouch

    guyonthecouch Well-Known Member

    Messages:
    128
    When put through heavy usage+glass, it's a lot less work/time consuming than cleaning/soaking/maintaining front end.. try it out!!
     
    Last edited: Mar 20, 2017
    MoltenTiger likes this.
  25. btka

    btka Well-Known Member

    Messages:
    856

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