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HE404 6680mAh 3.85V Li-ion Polymer replacement battery for Sharp dtab series tablets, front view showing battery surface and small 2-pin connector

HE404 6680mAh 3.85V Battery for Sharp dtab Tablet Replacement

Original price was: $38.99.Current price is: $29.99.

🔘 HE404 6680mAh 3.85V | 🔋 Li-ion Polymer | 📱 For Sharp dtab Tablet

8 in stock

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SKU: HE404 Category: Tags: , , , ,
📦 Shipping, Warranty & After-Sales Information (Click to expand ▼)

✅ Why Our Warranty Stands Out

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Compare✅ Qingsm Tech⚠️ eBay / AliExpress
Warranty Period90 days from delivery15-30 days from order confirmation
When It Starts📦 Upon delivery⚠️ Upon order confirmation (even before you receive it)
Claims HandlingWe do it directly — email usAutomated dispute system, seller dependent
After Window ExpiresStill can contact us for supportNo recourse, seller can ignore you

🔋 90-day warranty is the industry standard for replacement batteries. Batteries naturally lose capacity over time — this normal wear is not covered. Warranty applies to manufacturing defects only.

📦 Shipping Cost & Delivery Time (Economy Shipping from China)

📦 Note: Batteries are classified as hazardous goods and must be shipped via specialized channels, which may take slightly longer than standard couriers. Delivery times are estimates and may be affected by customs, weather, or other unforeseen circumstances. If your country is not listed in the table below, we are currently unable to ship batteries to that destination.

DestinationFreight (USD)Est. Delivery Time
United States$7.808–15 days
Canada$6.8018–30 days
Mexico$10.0030–60 days
Germany, France, United Kingdom, Greece$6.5018–30 days
Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Hungary, Ireland, Italy, Luxembourg, Netherlands, Norway, Poland, Portugal, Slovakia, Spain, Sweden, Switzerland$8.0018–30 days
Croatia, Finland, Lithuania, Latvia, Slovenia$8.0030–50 days
Bulgaria, Romania$14.0030–50 days
South Korea, Japan, Australia, New Zealand, Israel, Malaysia, Singapore, Thailand, Philippines, Kazakhstan$7.5018–30 days
United Arab Emirates, Saudi Arabia, Vietnam, Chile, Peru, Colombia, Brazil$18.0025–60 days

🇧🇷 Note for Brazil: Brazilian customs can occasionally cause delays of up to 80 days or more. And please indicate the recipient's CPF, as it is required for Brazilian customs and shipping. Thanks! We appreciate your understanding.

🇪🇺 Note for EU countries: Due to new EU customs regulations effective July 1, 2026, a flat tariff fee of $4.00 (approx. €3.50) applies to shipments to EU countries. This fee covers customs tariff, handling, and payment processing costs, and will be added at checkout. Thank you for your understanding.

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Description

✅ Condition: Brand New – Never used, factory-tested quality

✅ 6680mAh High Capacity – Restores full battery life for Sharp dtab tablets

✅ CE / RoHS / UN38.3 Certified

✅ 90-Day Warranty from delivery – Longer coverage than major platforms

✅ Ships in 3-7 days with tracking

🛡️ Shipping Protection Available at Checkout

✅ PayPal Buyer Protection included

⚠️ Low Stock Alert: Only 8 left in stock. Order now to avoid waiting.

Battery model: HE404
Capacity: 6680mAh (typical) / 25.24Wh
Rated voltage: 3.85V
Charge limit voltage: 4.4V
Battery type: Li-ion Polymer (Grade A cells)
Compatible with: Sharp dtab tablet
Package include: 1 x battery
Restore the reliable battery performance of your Sharp dtab tablet with this HE404 6680mAh replacement battery. The Sharp dtab series is a line of Android tablets designed for the Japanese market, known for their durable build, water resistance, and family-friendly features. After years of daily charging cycles, the factory battery capacity naturally degrades. This Li‑ion Polymer battery restores the full 6680mAh capacity, bringing back the dependable endurance these tablets were designed for. Built with grade A cells and multi‑layer safety protection against overcharge, over‑discharge, and short circuits. CE, RoHS, and UN38.3 certified.
Designed for Tablet‑Level Endurance: The Sharp dtab tablets are built around a 6680mAh battery that delivers extended runtime for media consumption, e‑reading, and productivity on the go. After extensive use, the original battery capacity degrades significantly. Common symptoms include: the tablet requiring more frequent charging, unexpected shutdowns at 15‑25% battery remaining, slower charging than when new, or visible battery swelling. This HE404 replacement battery restores the factory‑spec 6680mAh capacity and supports the original charging capability. The battery uses high‑density cell technology with precise voltage control, ensuring stable output and compatibility with the device’s original charging circuitry.
Compatibility Note: Fits Sharp dtab series tablets equipped with the HE404 battery model. Please confirm your battery model before ordering — HE404 is printed on your original battery. This battery is NOT compatible with other Sharp tablet models that use different battery configurations. The HE404 has specific dimensions and connector layout; using a different battery model may cause charging issues or incorrect battery reporting.

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Frequently Asked Questions

The HE404 6680mAh battery replacement is compatible with Sharp dtab series tablets that use the HE404 battery model. If you need a HE404 battery for Sharp dtab or a Sharp dtab tablet battery replacement, please verify your battery model printed on the original unit — HE404 is the correct model for compatible devices. For HE404 battery compatibility, check your tablet model and confirm the battery model printed on the original unit. This battery is NOT compatible with other Sharp tablet models that use different battery configurations. If your current Sharp dtab battery now drains quickly or shuts down unexpectedly, this HE404 3.85V 6680mAh Li‑ion Polymer battery will restore full endurance and reliability.

The HE404 6680mAh battery for Sharp dtab tablets has a typical capacity of 6680mAh (25.24Wh) and a rated voltage of 3.85V, with a charge limit of 4.4V. This HE404 3.85V 6680mAh Li‑ion Polymer battery is built with grade A cells and is CE, RoHS, and UN38.3 certified. For HE404 battery life after replacement, the battery restores the factory runtime that these tablets are known for. The HE404 6680mAh battery performance provides reliable power for media streaming, e‑reading, gaming, and productivity tasks. For best HE404 battery performance Sharp dtab, allow 2‑3 full charge cycles after installation to calibrate the battery meter. If your original Sharp dtab tablet battery now requires more frequent charging instead of lasting through extended use, this replacement will restore the full 6680mAh capacity and stable voltage output.

Professional HE404 battery installation is recommended for Sharp dtab tablets. These devices have a sealed design with strong adhesive. To replace HE404 battery in Sharp dtab, the technician must carefully open the device casing to avoid damaging the display or internal components, disconnect the battery's small 2‑pin connector, remove the old battery, and install the new HE404 battery before resealing. For HE404 battery installation, improper handling can damage the display or internal components. For HE404 battery health maintenance and Sharp dtab battery care tips: 1) Use the original charger and cable for optimal charging. 2) Keep battery level between 20% and 80% for daily use to maximize the lifespan of the 6680mAh cell. 3) Avoid exposing the tablet to high temperatures (above 40°C / 104°F), especially while charging. 4) For long‑term storage (over 2 months), keep the battery at approximately 40‑60% charge. 5) Perform a full calibration cycle after installation: drain the tablet until it auto‑shuts off, then charge uninterrupted to 100%. For HE404 battery care tips Sharp dtab, stop using immediately if the battery shows any swelling.

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