Q1. How can I tell when my ZeroLemon cell phone battery is fully charged?

We recommend that you leave your phone plugged in for an additional half an hour after it displays as “fully charged”. Many phones display 100% charge when they are actually only at 90%. The extra half an hour of charge time helps alleviate this issue, and ensures your battery is at full capacity.

Q2. How can I know if an ZeroLemon cell phone is compatible with my phone or not?

We offer detailed model descriptions, and lists of compatible phones/devices, on every website on which our products are sold. We highly recommend that you carefully check this information before ordering any of our products.

Q3. How do I install ZeroLemon Batteries and Cases to my phone?
Please refer to below youtube links for detailed instructions:

Q4. Why it shows “invalid battery” when installing my Lg G3 9000mAh extended battery? How to fix it? Please refer to this video for resolution:

Q5. Instruction Manual for Samsung Galaxy Note 4 10000mAh extended battery with rugged case.

Zerolemon Samsung Galaxy Note 4 10000mAh extended battery with rugged case-instruction manual

Q6. How do I perform full charge on my ZeroLemon Galaxy Note 4 10000mah Extended battery?


Step 5: Dont’ stop charging even it shows 100% charged. Fully charge performed when it only shows words like “Fully Charged”.

Q7. Note 5 3500mAh Slim Power Battery Case – The issue related to quickcharge and charger This battery case passthroughs quickcharge. We suggest to use original microusb cables and chargers for optimal quick charge compatibility. Other chargers and Cables may not be compatible. The ‘Fast Charging: XX%’ message will turn up on your screen when the phone is plugged in with the battery case. Please see the demonstration video below.

Charge time:

1.5-2 hours: Charge the Note 5 by ZeroLemon Battery Case

3-4 hours: Charge ZeroLemon Battery Case

6 hours: Charge the Note 5 and battery case



Q10. How to remove Zerolemon ZeroShock iphone 6/6s 3500mah battery case?
We suggest to take the upper rim off firstly, then pull the phone by the strength of palm. Or you can take advantage of something sharp like a pencil to poke it up through the headphone jack.

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