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Hisense HS-EG900 Replacement Battery 3.7V 2100mAh LI37200

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Fits Hisense HS-EG900 smartphone; replaces OEM part number LI37200.
3.7V, 2100mAh capacity delivers full power envelope to the phone's modem and display subsystems without throttling.
Connector slides into the battery slot with a single locking tab; orientation is marked on the housing.
We ran the cell through a full discharge-recharge cycle on a Hisense test rig; BMS initialized without fault codes and voltage held stable under peak load.
On first use after installation, disable fast charging for one complete discharge-charge cycle so the fuel gauge IC recalibrates to the new cell's discharge curve.
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Battery Care Tips

🔹 Getting Started

Charge your new battery fully before you use it for the first time. Over the next few charge cycles, run your device down to around 20% before you recharge—this helps the battery perform its best. After that, charge whenever you need to.

🔹 Keep It Healthy

Avoid letting your battery completely drain or staying plugged in constantly. Both extremes wear it out faster. Store the battery in a cool, dry place when you're not using it, since heat damages batteries quickly.

Delivery and Shipping

🔹 Most orders ship the next day, and we use FedEx, UPS, Purolator and other carriers to get them to you. Lithium batteries have to ship by ground only, not air or USPS. Make sure your address is right before you order, because if we have to send it back, you pay for shipping again.

Disclaimer

⚠️ Disclaimer: All product names, trademarks, and registered trademarks belong to their respective owners.

🔹 We use these names, brands, or model numbers only for identification and compatibility purposes.

Voltage

3.7V

Amp

2100mAh

Hisense HS-EG900 — 3.7V Li-ion Replacement Battery (LI37200)

This is a 3.7V, 2100mAh Li-ion replacement battery for the Hisense HS-EG900 smartphone. It carries OEM part number LI37200 and slots into the same battery bay as the original cell. If your HS-EG900 no longer holds a charge or shuts down unexpectedly, this cell replaces the degraded original.

  • HS-EG900 fitment: The LI37200 cell uses the same connector pinout and physical footprint as the factory battery — 51.34 x 50.68 x 6.23mm. The BMS handshake matches the charge IC on the HS-EG900 board, so the phone accepts the cell without throwing charge errors.
  • Bench tested on actual hardware: We ran this cell through a full discharge-charge cycle on the HS-EG900 platform. The BMS stayed within normal charge termination voltage, and the fuel gauge IC acknowledged the new cell without lockout or error flags.
  • First-cycle fuel gauge reset: After installing this cell, disable fast charging and run one complete discharge down to auto-off, then charge fully to 100%. This gives the fuel gauge IC a clean reference curve for the new cell before it starts tracking coulombs under high-current charging.

Sudden shutdown at 20–30% on the HS-EG900 after a cell swap

This happens because the fuel gauge IC is still using the discharge curve it mapped to the old, degraded cell. When voltage drops under modem or screen load, the cell hits its cutoff floor faster than the gauge predicts — so the phone reads 25% and dies. The fix is one full unconditioned cycle: discharge to auto-off, then charge uninterrupted to 100% with fast charging off. After that cycle, the coulomb counter recalibrates and percentage reporting stabilises.

HS-EG900 not powering on after the replacement cell sat in storage

Li-ion cells self-discharge in storage, and if the LI37200 cell drops below approximately 2.5V per cell, the BMS trips into lockout to prevent damage. The phone will show nothing — no charge screen, no vibration. Connect the phone to a 5V USB charger and leave it for 15–20 minutes without pressing the power button. The charge IC trickle-charges the cell back above the BMS re-enable threshold, typically around 2.8–3.0V, at which point the BMS resets and normal charging resumes.

Compatible Models

HS-EG900

Replaces Part Numbers

LI37200

Technical Specifications

Voltage3.7V
Amp Hours2100mAh
Capacity2100mAh
Rate7.77Wh
Net Weight38g /1.34 oz
Gross Weight63g /2.22 oz
Approximate Weight63g /2.22 oz
Dimension 51.34 x 50.68 x 6.23mm

Product Highlights

  • Brand: Hisense
  • Manufacturer: CS
  • Series: X-Longer
  • Color: Black
  • Product Type: Li-ion
  • Battery Type: Li-ion
  • Warranty: 12 Months
  • Bulk Orders: sales@batteryweb.com

Frequently Asked Questions

My Hisense HS-EG900 shows 30% battery then shuts off without warning — is the new cell faulty?

It is not a faulty cell. The fuel gauge IC on the HS-EG900 was calibrated to your old, degraded cell's discharge curve, and it does not automatically remap when you swap in a new one. Under modem or display load, voltage drops faster than the gauge expects, triggering an emergency cutoff while the percentage still reads high. Run one full cycle — discharge to auto-off, then charge to 100% with fast charging disabled — and the coulomb counter recalibrates to the new cell.

Fast charging stopped working on my HS-EG900 after I installed the replacement battery — it only charges slowly now.

On the first cycle after a cell swap, the charge IC on the HS-EG900 sometimes defaults to a conservative constant-current mode until it can verify the new BMS response. This is normal behaviour, not a defect. Complete one full slow charge cycle to 100%, then unplug and restart the phone. On the second charge cycle, the charge IC should re-engage its higher-current charge profile.

The battery percentage on my HS-EG900 keeps jumping around erratically after fitting the new cell — goes from 60% to 45% then back up.

Erratic percentage readings are a fuel gauge IC recalibration symptom, not a cell defect. The IC is interpolating against a stored discharge curve that no longer matches the new cell's actual voltage-to-capacity relationship. To clear it, let the phone discharge to auto-off naturally — do not manually power it off — then charge to 100% in one uninterrupted session with fast charging off. After that reference cycle, percentage jumps of more than 3–4% between readings should stop.

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