Where do you get your info?
This is completely untrue. There is nothing wrong with sending out fully charged Li-ion batteries for storage purposes. It has no adverse effect on the cell's capacity.
one advantage of lithium is the fact that fully charged cells can be stored for long periods of time due to their very low self discharge rate.
This is completely untrue. There is nothing wrong with sending out fully charged Li-ion batteries for storage purposes.
edit: btw I read early in this thread someone asking why the GH shows that the battery is empty while it still holds 30% charge. It's to preserve battery life as well, because going from 100% to 0% will quickly wear the battery out. Best is to use 70% charge only, exactly what the GH does.
picky, pickyYeaah, but BTW its called INDIA Pale Ale, not Injun ;-)
It is, check every source on the internet and it will say like-wise. Storage at 100% will degrade the battery life. And yes I'm talking about Li-Ion
edit: btw I read early in this thread someone asking why the GH shows that the battery is empty while it still holds 30% charge. It's to preserve battery life as well, because going from 100% to 0% will quickly wear the battery out. Best is to use 70% charge only, exactly what the GH does.
Here for the most part...
http://batteryuniversity.com/learn/article/lithium_based_batteries
You will notice further down the page it says "Degrades at high temperature and when stored at high voltage"
http://batteryuniversity.com/learn/article/how_to_prolong_lithium_based_batteries
Table 3 shows that storing at full charge has an adverse effect on cells capacity unless I'm missing something.
I understand this but surely only under optimal conditions (low temp and not fully charged) again unless I'm not understanding something here.
Just to add I have stored cells at full charge and they have lost capacity after checking whereas cells I have stored at around 3.8v have showed minimal loss.
Now that said if I'm really not understanding something here please add some info that might help me understand where I'm going wrong.
Here for the most part...
http://batteryuniversity.com/learn/article/lithium_based_batteries
You will notice further down the page it says "Degrades at high temperature and when stored at high voltage"
http://batteryuniversity.com/learn/article/how_to_prolong_lithium_based_batteries
Table 3 shows that storing at full charge has an adverse effect on cells capacity unless I'm missing something.
It is, check every source on the internet and it will say like-wise. Storage at 100% will degrade the battery life. And yes I'm talking about Li-Ion
edit: btw I read early in this thread someone asking why the GH shows that the battery is empty while it still holds 30% charge. It's to preserve battery life as well, because going from 100% to 0% will quickly wear the battery out. Best is to use 70% charge only, exactly what the GH does.
which model do you have?
My Xtar MC2 has no settings, it's got automatic detection and a set charge rate of 4.2V - 2x0.5A
I would not worry about GHL sending out full cells. I also doubt they are 100% full upon arrival. Can anybody can confirm what the voltage is this with a multimeter upon receiving new cells? That is the only way to truly know. My GHB1 charges to 4.15v when full, so a new battery should read 3.7-3.8v because I assume they are 70-80% full.
A fully charged Li-ion cell charges to 4.2v when full. See that disk shaped cap on the positive end of the battery? That is the PCB and regulates how full and how empty the cell gets before shutting down. It is overcharge and discharge protection. So while it may be bad for the cell to charge to the maximum amount that the cell can take, our batteries never actually hit that threshold. Mine is near it at 4.15v when full.
the reason your full cells decrease in voltage is because your cells have self discharged just past that initial 4.1-4.2v spike that you would see when they are 100%. They will discharge and remain at 3.7v, their operating voltage. The cells that you store at less than full have already passed the 4.1-4.2v threshold and thus will appear to lose less capacity because their voltage will decrease a smaller amount to 3.7v. In actuality, both cells have lost the same % of capacity despite the full ones decreasing in voltage more.
It may well be the best design attribute for GHL to not allow the hopper to drain the battery past 50% just for this reason. However, this doesn't square with some reports of batteries losing their stooch after "only" 200-300 cycles. By this table, they should last way longer.
Sorry guys I'm sure this topic has been beaten to death, but is there really any worthwhile difference between titanium and ss? Besides the obvious, titanium is lighter, doesn't get as hot and does not get marked as easily. But I've also heard people say that ti accumulates resin/reclaim more readily than ss meaning you need to clean it more frequently... Cam anyone confirm? Is it worth the extra $
It may well be the best design attribute for GHL to not allow the hopper to drain the battery past 50% just for this reason. However, this doesn't square with some reports of batteries losing their stooch after "only" 200-300 cycles. By this table, they should last way longer.
Speaking of hunky dory, that's how everything seems with my Ti hopper. The threads did get smoother after a Blu Tack/iso cleaning. Although the last turn or two when reattaching the back end seems to get tougher, I'm thinking that's due to contact with the battery.
I also received my feeder today, along with the cases. I feel ya on your skepticism re: the lid... but ya know what, just now as I was typing this I tried several "test drops" on both hardwood and carpet to see if the lid popped off (nothing too gnarly, just a couple feet of the ground) and the lid stayed on the whole time. Like you, I have yet to put any herb in and really use it yet, so we'll see. But I'm more optimistic than I was when I started this paragraphRegarding the FEEDER (last post here for reference)
http://fuckcombustion.com/threads/the-grasshopper.18482/page-510#post-1038129
Got mine today... I actually bought two for the convenience of day versus night meds.
Gotta say, I'm not sure about it yet. My first out-of-the-box criticism is that the lid is not very sturdily attached when installed. If you drop this thing from a few feet, there might be herb everywhere. I guess a little piece of tape will fix that.
The other thing is, I can't tell which-a-way to shake this thing to ensure a nominal load.
But I need a day or so to futz. I'll be back on that...
I caved and ended up buying 3 brand new batteries. Got my GH used so I've never felt a battery at full potential. I'm excited.
25 bucks for 3 batteries is easy.
Someone said they finish a bowl in a couple hits .. Takes me like 15 lmao. I temp step it pretty hardcore.
I'd say I do about 3 hits on 2, 3 hits on 2.5, couple on 3, 3.5 is the happy medium to chill at, 1 or 2 hits at 4-4.5 to finish it off.I'm usually on the temp step train also, and yeah between 6-10 hits per bowl
Just a word of warning - streching silicone is a pretty sure fire way of causing spallation, which means that minute silicone particulate is shed which can then potentially be inhaled into the body. Needless to say, silicone should not be inhaled into the lungs or be allowed to enter the bloodstream - and long term or excessive exposure can cause medical complications.the GH won't fit in the case with the silicone mouth guard still attached. However, you can kinda stretch it over the smaller of the 2 case caps, and it stays on there pretty good.
Do you guys have to pay for shipping when sending it back to HL for repair?
I'm in the UK and I've got a GH waiting for me at the post office pending a large customs charge. If I don't pay it they'll send it back to HL.
I'm considering just letting the send it back and then buying one from the UK off Vapefiend, as it will be much easier to send it back to them for return. Also it means I won't risk having to pay a customs charge every time I get a repaired unit back.
Am I crazy to consider sending back my Hopper?
I had to Warranty my purple Ti right out of the box due to cop lights.
I'm in the UK, HL sent out the replacement body immediately and I received it in just over a week.
I didn't have to pay customs charges on the replacement.
However I did pay for the return postage of the broken body. I went for the Royal Mail 'Tracked and Signed' option at about £8. There were cheaper options but I didn't want to risk the chance of the return going missing.
If you were still waiting for them to send the hopper out I would have suggested canceling the order and going via vapefiend but as it's already been shipped I'd just pay the customs. At the very least you should get an extra battery out of it and you are more likely to get the 2.0 Charger cable. I believe vapefiend's stock is still shipping with the older cable.