ITS BACK!! The MAXI Circle 650mAh Battery

Superb Justfog Maxi battery that will fit all standard eGo type tank systems and Clearomisers and 510 thread.  


This is simply the best battery around for the price... great hit, long battery lifespan for a 650 mAh


3.4 V – Constant voltage

Battery capacity: 650mAh or 900 mAh

Charged by 5pin USB cable.

Constant voltage circuit.

Short circuit protection.

Over discharge protection.

Overheating protection.


The BATTERY explained..
650 mAh Li-ion Battery
Battery power On / Off manually
Automatic power shut off against overheating
Constant voltage control circuit
Protection function against a short circuit to prevent troubles or accidents


Caution: Battery Safety

Use special caution when working with Li-ion cells, they are very sensitive to charging characteristics and have been known to explode or burn if mishandled.

Make sure the user has enough knowledge of Li-Ion rechargeable batteries in charging, discharging and assembly before use.

When charging always place in/on a fire-proof surface.

Never leave charging batteries unattended.

If your battery gets hot to the touch, or if you detect a burning smell: STOP-using immediately and place in a safe place preferably outside to cool down for at least 1 hour. If the battery is still under the warranty period then please return for a replacement or if its out of warranty you can still return and we will dispose of it under the WEEE Waste Disposal conditions.

If you notice that the device is activating its self then immediately disconnect the battery from the atomizer/clearomiser and DO NOT reconnect, trust or place in your pocket from this point on.  

Read the information found at before purchasing. It is important to carry batteries properly, charge properly, and dispose of properly. are not responsible for damage if there is any modification of the batteries/chargers in any form or shape (including pack making). We are not responsible for any damage caused by misuse or mishandling of Li-Ion batteries and chargers. We will not be held responsible or liable for any injury, damage, or defect, permanent or temporary that may be caused by the use of any batteries.

Battery Disposal:


We offer a free service to all customers who wish to return their old or disused batteries so we can dispose off them in the correct manner adhering to the government WEEE directive. If you decide not to return them to us then please dispose of them via your local councils policy for the correct disposal of electrical waste. Please email us and we will arrange collection.

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Justfog MAXI Circle 650mAh Battery

  • £11.95

  • Price in reward points: 389

Available Options

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Tags: justfog, maxi, maxi clearomiser battery, ego battery, 650mah battery, CIRCLE BATTERY