GS eGo II Prime Battery Basics

This is a pen-shaped vape battery made by Green Sound, often shortened to GS. It is the part that holds the power. You screw a tank on top, fill the tank with liquid, and press the button to vape.

Here is the battery from top to bottom, in the order you meet each part.

Thread

Button + light

2200mAh cell

USB port

tank screws on

press to vape

the power inside

charge here

Why do people still use a battery and tank instead of a pod kit? Mainly choice. With a tank on top, they can fill it with any 10ml liquid they like, in any flavour or strength, and change coils when they need to.

The cell inside is built in, so it cannot be taken out and swapped. When it gets old, the whole battery is replaced. The box holds the battery, a USB cable and a user guide. There is no tank in the box. That catches people out, so it is worth saying at the counter.

Most UK sellers list the GS eGo II Prime Battery at 2200mAh. One lists 2000mAh. 2200mAh is the figure you will see almost everywhere.

Tanks It Works With

The top of the battery has two threads in one. That means it takes both eGo tanks and 510 tanks, which covers most small pen tanks.

What matters more is the coil. UK sellers say the battery works with coils from 1.0 to 3.0 ohms. Here is what that looks like on a simple scale.

below 1.0

1.0 to 3.0 ohms: works

above 3.0

Grey means outside the range sellers give.

Sellers name tanks such as the CE4, the H2 and the H2S. They all use coils inside that range. Green Sound's own GS H2S tank is the natural partner, since the two come from the same maker.

Fitting a tank. Screw it on gently until it stops. There is no need to force it, and a tank that is screwed on too hard can be difficult to get off later. Keep the thread clean too. A drop of liquid on the thread can stop the battery and tank from touching properly, and a quick wipe with a tissue usually sorts it.

Big cloud tanks with very low ohm coils are not a match. This battery is made for small tanks and a gentle, tighter pull, the kind that suits 10ml liquids.

USB At The Bottom

The charging port sits at the bottom end, not near the tank. It takes the micro USB cable that comes in the box.

Because the port is at the bottom, the tank can stay on while it charges. One seller also lists it as "passthrough", which means you can vape while it is plugged in. Not every listing says this, so treat it as a handy extra rather than a promise.

How much charge is left? The button lights up in a different colour depending on how full the battery is.

White: plenty left

Blue: getting lower

Red: charge it soon

Sellers do not agree on the exact percentage where each colour changes, so it is best read as a rough guide. When the light turns red, plug it in. Sellers of the eGo II range also say that if the light flashes red several times when you press it, the battery is flat.

Charging sensibly. Use the cable from the box, or a good quality one like it. Charge on a hard surface, not a bed or sofa, and do not leave it charging overnight or while you are out. UK fire services give this same advice for all vape batteries. [documented: London Fire Brigade, e-cigarette charging safety advice]

Five Clicks To Start

The button does two jobs. It turns the battery on and off, and it fires the coil.

●●●●●Five quick clicks: turns it on, or off

▬▬▬Press and hold: fires the coil while you breathe in

The five clicks are there for safety. The battery cannot fire by accident in a bag or pocket when it is switched off.

If a customer says the battery does nothing, the first thing to check is whether it has been switched on with five clicks. The second is whether it has any charge.

Built-In Safety

UK sellers list four kinds of protection. Here is what each one means in plain words.

Short circuit protection	Cuts the power if the tank or coil has a fault.
Overload protection	Stops it working if too much power is being pulled.
Atomiser protection	Stops it firing into a coil that is out of range.
Low voltage protection	Stops it when the battery is nearly flat, so it is not drained too far.

Together with the five-click switch, these are why a basic pen battery like this is seen as a simple, low-fuss choice.

The protections cannot help with everything, though. Keep the battery dry, do not drop it on hard floors, and keep it out of hot places such as a car dashboard in summer. A dented or damaged battery should not be used.

Colours On Offer

There are eight colours on this listing.

Black Stainless Steel Blue Purple Rainbow Pink Red Green

Every colour is the same battery inside. Only the outside changes. Stock moves between colours, so the dropdown above is the place to check what is available today.

Colour matters more on a pen battery than you might think. People carry it all day, and many want one that looks like theirs and not someone else's.

Prime, 2200 Or 3200?

We stock more than one GS battery, and the names are close. This is how to tell them apart.

eGo II Prime (this one) → 2200mAh, charging port at the bottom, eight colours.

eGo II 2200mAh → the same size battery. One seller describes its charging port at the top instead.

eGo II 3200mAh → a bigger battery, so it lasts longer between charges.

Mega Kit → a battery sold with an atomiser and a USB charger, in 2200 or 3200mAh.

For a first-time buyer who just wants it all in one go, the Mega Kit is the easy option because the atomiser is already in the box. For most people, the Prime and the standard 2200 do the same job. The 3200 is the one to show someone who wants to charge less often. Those customers can go straight to the 3200mAh version.

eGo II Prime Wholesale Orders

Who asks for a battery like this? Here are three common requests, put simply, and what fits each one.

My old pen battery will not hold a chargeA new Prime, if their tank is eGo or 510.

I just want something simple with a buttonThe Prime plus a small tank.

I need a spare so I am never withoutA second Prime in a different colour.

Some people like to keep one battery charging and one in use. That is why an eGo II Prime wholesale order can go further than a shop expects: some customers buy two.

The GS eGo II Prime Battery has been one of the steadier sellers on this site. It is a small, low-price item that sits well near the till. For chargers, cables and other small extras, see our spare parts and accessories.

GS eGo II Prime Bulk Stock

Three plain points for anyone buying more than a handful.

No vape duty. The new duty from 1 October 2026 is charged on vape liquid. A battery holds no liquid, so it does not carry that duty. [documented: gov.uk, Vaping Products Duty guidance]

Spread the colours. Every colour works the same. So a GS eGo II Prime bulk order can be split across colours with no risk of buying the wrong thing.

Remember the tank. The battery is only half a vape. If a shop sells the battery, it helps to have a tank and coils nearby too.

If a shop would rather sell the whole thing in one box, the GS Mega Kit puts a battery, an atomiser and a charger together. For a shop that already sells tanks, a GS eGo II Prime bulk buy on its own is the simpler choice.

Short Answers

Does the GS eGo II Prime Battery come with a tank?

No. The box has the battery, a USB cable and a user guide. For a complete set in one box, a full eGo CE4 kit includes a tank.

How do I turn it on?

Click the button five times quickly. Do the same to turn it off.

What tanks fit?

eGo and 510 thread tanks with coils between 1.0 and 3.0 ohms, such as the CE4, H2 and H2S.

Will it work with a big cloud tank?

No. Very low ohm coils are outside its range. It is made for small tanks.

How do I know when to charge it?

Watch the button light. White is plenty, blue is lower, and red means charge it soon.

The light keeps flashing red.

The battery is flat. Charge it with the USB cable until the light changes.

Can I change the battery cell inside?

No. The cell is built in. When it wears out, the whole battery is replaced.

Is it 2200mAh or 2000mAh?

Nearly every seller says 2200mAh. One listing says 2000mAh, which looks like the odd one out.

Do all colours cost the same on an eGo II Prime wholesale order?

Yes. Every colour is the same price on this listing, so pick them freely.

Is there vape duty on a GS eGo II Prime bulk order?

No. The duty applies to liquid, and the battery holds none.