Why You Need This Battery
Your ASUS ZenBook Flip S is a premium convertible laptop thin, light, and powerful. But after a couple of years, even the best batteries degrade. Youve probably noticed it wont hold a charge, it drains faster than before, or the laptop shuts down unexpectedly when you still have 2030% battery left.
This C21N1706 replacement battery solves that problem.
Designed for ASUS ZenBook Flip S UX370 Series
This battery is engineered as a direct replacement for the original ASUS battery. It fits all major variants of the
UX370 family:
ZenBook Flip S UX370UA
ZenBook Flip S UX370F
ZenBook Flip S UX370U / UX370UAF / UX370UAR
And specific models including (but not limited to):
UX370UA-C4160T, UX370UA-C4241T, UX370UA-EA376R, UX370UA-EA294R, UX370UA-C4136T, UX370UA-EA328T, UX370UA-C4308T, UX370UA-C4197T, UX370UA-C4217T, UX370UA-0061A7500U, UX370UA-C4124T, UX370UA-C4305T, UX370UA-C4178T, UX370UA-C4256T, UX370UAR-1B, UX370UA-C4060T, UX370UA-C4125T, UX370UA-C4331T, UX370UA-C4170T, UX370UA-EA373T, UX370UA-C4195T, UX370UA-C4058T, UX370UA-C4341T, UX370UA-EA346R, UX370UA-EA371T, UX370UA-C4196T, UX370UA-EA349T, UX370UA-C4131T, UX370UA-C4367T, UX370UA-C4118T, UX370UA-C4290T, UX370UA-C4181T, UX370UA-EA315R, UX370UA-C4347T, UX370UA-C4184T, UX370UA-C4210T, UX370UA-C4059T, UX370UA-C4185T, UX370UA-C4364T.
Specifications
You Can Trust
Specification Detail
Model C21N1706
Chemistry Li-Polymer (Li-ion)
Voltage 7.7V
Capacity 39Wh / 4925mAh
Color Black
Operation Time approx. 23 hours
Certifications CE, FCC, RoHS
Condition Brand new, Grade A cells
Warranty 12 months (seller backed)
What a Failing Battery Costs You
Sudden shutdowns Your laptop dies in the middle of a client presentation or an online class.
Performance throttling When the battery is weak, the laptop runs slower to save power.
Swollen battery A bulging battery can warp your keyboard deck, crack the touchpad, or become a fire hazard.
Anchored to an outlet You cant use your ZenBook as a true portable device anymore.
Safety & Reliability
Every battery is built with Grade A LiPolymer cells, never refurbished or recycled. It includes builtin circuit protection against overcurrent, overvoltage, overheating, and short circuits. We test each unit before shipping to ensure consistent, safe power.
Easy Installation
Flip your ZenBook over, remove the back cover (requires a small Phillips head screwdriver and care), disconnect the old battery, and install the new one. Fully charge before first use for optimal performance.
If youre not comfortable with DIY repair, professional installation is recommended.
Whats Included
1 x C21N1706 Replacement Battery (in packing carton box)
Before You Order
Please doublecheck your original battery part number (C21N1706 or 0B200-02420200) and your laptop model from the compatibility list above. This battery is specifically designed for the ZenBook Flip S UX370 series. It will not fit other ASUS ZenBook models (like UX330, UX430, or older Flip models).