X4 5000mAh 3.87V Li-ion Replacement Battery for Sharp Aquos Wish4 SH-52E Docomo USB PD 3.0

Description

Battery model: X4 / 4ICR19 (compatible with 31cr19)
Capacity: 5000mAh
Rated voltage: 3.87V
Charge limit voltage: 4.45V
Battery type: Li-ion (Grade A cells)
Compatible with: Sharp Aquos Wish4 SH-52E (docomo Japan version)
Package include: 1 x battery
Restore the battery life of your Sharp Aquos Wish4 SH-52E with this X4 5000mAh replacement battery. Released in July 2024, the Aquos Wish4 features a 6.6-inch HD+ display (1612×720 resolution), MediaTek Dimensity 700 processor, and supports USB PD 3.0 fast charging with PPS (Programmable Power Supply) compatibility. This Li-ion battery delivers the factory-rated 5000mAh capacity for all-day use. Unlike generic alternatives, this X4 battery for Sharp Aquos Wish4 SH-52E is precisely dimensioned to fit the original compartment and uses the correct small 2-pin micro connector. Built with high-density cell technology and multi-layer safety protection against overcharge, over-discharge, and short circuits. CE, RoHS, and UN38.3 certified.
Technical Details for Aquos Wish4 Owners: The X4 5000mAh battery replacement for Sharp Aquos Wish4 SH-52E maintains the original 4.45V charge termination voltage (3.87V nominal) and uses low-resistance cells to ensure stable power delivery. Unlike lower-quality alternatives, this Sharp Aquos Wish4 battery replacement supports the original USB PD 3.0 fast charging protocol with PPS — reaching approximately 50% charge in about 60 minutes and a full charge in approximately 130 minutes using a compatible USB PD charger. The built-in protection circuit module (PCM) guards against over-charge, over-discharge, short circuit, and over-current. For best longevity, avoid frequently draining the battery below 10% — lithium-ion cells prefer partial discharges between 20% and 80%.
Important Compatibility Note: This X4 battery for Sharp Aquos Wish4 SH-52E is designed for the docomo Japan version (model SH-52E). Compatible with original battery codes X4, 4ICR19, and 31cr19. Please check your original battery label before ordering. For reference, European retailers sell this battery for approximately €21-27 (about $23-29 USD) excluding shipping. This battery is NOT compatible with the international version of Aquos Wish4 (SH-52F) or the Aquos Wish3 series.
Water Resistance Warning – Important! The Sharp Aquos Wish4 SH-52E has an IPX5/IPX8 water resistance rating. Replacing the battery requires breaking the original waterproof adhesive seal. After battery replacement, the device may lose its water resistance certification unless proper waterproof adhesive is reapplied. Professional installation with fresh waterproof sealing tape is strongly recommended. If you choose to replace the battery yourself, you must apply new waterproof adhesive (not included) to restore water resistance. Qingsm Tech is not responsible for water damage after DIY installation.
Installation Guidance: The Sharp Aquos Wish4 SH-52E has a sealed design with strong waterproof adhesive. Professional installation is strongly recommended. If you choose to replace the battery yourself: 1) Power off the device completely. 2) Heat the back cover to soften adhesive (use a heat gun at no more than 70°C). 3) Carefully pry open the back cover with a suction cup and plastic spudger — the display is fragile. 4) Remove the cover screws and disconnect the battery connector by pulling the plug (not the wires). 5) Remove the old battery (lightly adhered), connect the new X4 battery, then reassemble. 6) If the device doesn’t power on after replacement, leave it connected to a USB PD charger for 10-15 minutes to activate the protection circuit. Improper installation may damage the display, flex cables, or water resistance.
Battery Care for Aquos Wish4: For maximum lifespan, keep battery level between 20% and 80% for daily use. Use a certified USB PD 3.0 charger with PPS support for optimal charging speed — standard 5V/2A chargers will work but will charge much slower (approximately 3-4 hours). If storing the device for more than 2 months, keep the battery at approximately 60% charge. Avoid leaving the Aquos Wish4 in hot environments (e.g., inside a car in summer) — heat accelerates battery degradation. Stop using immediately if the battery shows any swelling. For optimal Sharp Aquos Wish4 battery calibration, perform one full discharge-recharge cycle (drain until auto-shutoff, then charge uninterrupted to 100%) after installing a new battery to help the system calibrate battery level reporting.