Benjamin81001 90-Cubic Inch, DOT Certified Charging System Cylinder

If you’re looking at buying this, you already know what to expect. Only reason to buy it here is because it’s priced lower than anywhere else, even if they have a sale.

Great Unit!

Fast delivery and it filled my Benjamin Armada from 2000 to 3000 psi in a few seconds.My unit came with a different type of regulator/hose set up than shown in the image here. It was confusing at first.It took about 50 minutes to fill the tank from 0 to 4500 psi from my small compressor. But once that's done I'll refill it when it gets down to 3000 psi, back to 4500 psi which should just take a few minutes.The tank looks very well-made and was very well packed.This tank should top off my Benjamin Armada in .177 cal from 2000 back to 3000 psi about 10 or more times before I need to recharge the tank. So the tank is the perfect size for me as it's fairly small and very lightweight.So, I recommend this although I'd like to see it a little less expensive.

I have a 2 Benjamin airguns and a Benjamin hand pump and love all of them, so decided to try their 90ci charging bottle. What an absolute waste of time, energy and money (bought some other small items to try and remedy a fix).Got the first one and it leaked right out of the box. Leaked were the valve assembly goes into the bottle and out the face of one of the pressure gauges. Could not find a solution anywhere, so I did a replacement. The second assembly has the exact same failure.NOT IMPRESSED BENJAMIN!!!!

This tank has a few minor issues, so I'd call it a 3 star product. The price on Amazon is super cheap, and is about $100 less than most other retailers, so because its such a bargain I'm giving it a 4 star rating.Here are the issues:1) It does NOT have a regulator, so you need to be careful with the valve when filling your gun. There's no overfill protection.2) The pressure gauge only works when the bottle is connected to a gun and the valve is open, so there is no way to know how much air is left in the tank without connecting it to something and performing a fill.3) This tank leaked where the gauge is screwed into the vale. I have thread sealer and tools, so I was able to fix it, but I don't think I should have had to deal with it.The tank arrives empty, which I expected. Using a Benjamin HAND PUMP, I filled this tank to 3,000 PSI. It took me about an hour and a half (including breaks to let the pump cool) and took around 1,800 pump strokes. I don't mid the work, I just skipped the gym that day. Going to my local dive shop would take 30 mins, and the gym would take an hour, so hand pumping really isn't taking any longer and it's saving me some money.This tank is rated to 4,500 PSI, but I plan to use it to shoot my unregulated gun with a 3,000 PSI fill tethered to the tank, and since the tank doesn't have a regulator either, I'm only filling to 3,000.Shooting my Sumatra 2500 tethered to the tank is great. This gun is known for being an air hog, and having a declining shot string. Shooting tethered to this tank fixes both issues and gives me tons of shots on high power and keeps my POI and FPS consistent shot after shot. The fill probe air line supplied with the tank is short, so I bought a 36'' extension, so I can keep the tank under my shooting table and still have enough air line to comfortably move the gun around.I'll probably upgrade the valve to one with a built in regulator at some point in the future.