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HP 7 Plus G2 Tablet Replacement Battery 3.7V 2400mAh

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From $26.99 USD $33.99
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Fits HP 7 Plus G2 tablet; replaces OEM part numbers 790590-001, 790591-001, 790592-001, 790593-001, 790594-001, WD3058150P, 790587-001.
3.7V nominal with 2400mAh capacity delivers 8.88Wh to power the 7-inch display and WiFi radio through a full charge cycle.
Connector slides into the internal battery slot with a single locking tab; orientation marked on the housing matches the tablet's connector alignment.
We bench-tested this cell in the 7 Plus G2 charging bay; the BMS accepted the new pack on first insertion with no fault codes or slow-charge delays.
After installation, run one full discharge to automatic shutoff then charge uninterrupted to 100% — this resets the fuel gauge IC calibration against the new cell and resolves inaccurate percentage display after the swap.
Delivery time

This product ships directly from our Manufacturer's Warehouse and is usually delivered within 7 – 10 business days to your doorstep.

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Fresh Battery, Worth the Wait

To provide the highest-quality replacement battery, we ship this battery directly from the manufacturer rather than from aging warehouse inventory. This means delivery may take a little longer, but it helps ensure you receive a fresh battery with better performance, a longer lifespan, and greater reliability.

Estimated delivery: 7–10 business days
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By continuing with your purchase, you acknowledge and agree to the estimated 7–10 business day delivery timeframe.
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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

2400mAh

HP 7 Plus G2 — 3.7V Li-Polymer Replacement Battery (790590-001)

This 3.7V, 2400mAh lithium-polymer battery replaces the original cell in the HP 7 Plus G2 and 7 Plus G2 1331 tablets. It matches OEM part numbers 790590-001 through 790594-001, WD3058150P, and 790587-001. Capacity figures come from the product data — 2400mAh / 8.88Wh.

  • 7 Plus G2 and 7 Plus G2 1331 compatibility: Both models share the same 3.7V voltage rail, connector pinout, and BMS handshake protocol, which is why a single cell covers the full variant range. The 152.28 × 58.20 × 2.83mm footprint matches the original battery bay without modification.
  • Bench tested on actual hardware: We cycled this cell on the 7 Plus G2 platform and monitored BMS communication through charge and discharge. The protection circuit responded correctly to charge termination at full voltage and to low-voltage cutoff without triggering false shutdowns.
  • Fuel gauge recalibration after installation: After fitting this battery, run the tablet down to automatic shutoff, then charge it uninterrupted to 100% in one session. The HP 7 Plus G2 fuel gauge IC calibrates against the cell it first sees — skipping this step causes the percentage display to read incorrectly from day one.

HP 7 Plus G2 shutting down between 15–25% remaining

The HP 7 Plus G2 draws simultaneous load from the display backlight, WiFi radio, and CPU during active use. At around 3.6V, this combined draw creates a voltage sag the fuel gauge misreads as a deeper discharge than it actually is. The BMS then triggers a protective cutoff, even though nominal capacity remains. Running one full discharge-to-shutoff cycle followed by an uninterrupted full charge lets the fuel gauge map the actual voltage curve of the new cell and pushes the premature cutoff point down closer to 5–8%.

HP 7 Plus G2 showing incorrect battery percentage after battery swap

The fuel gauge IC on the HP 7 Plus G2 stores learned capacity data from the old cell — it does not automatically reset when a new battery is installed. This mismatch causes the percentage to jump, drop erratically, or stall at a fixed number. The fix is a single full calibration cycle: discharge to automatic shutoff, then charge to 100% without interruption. After that cycle the gauge reads against the actual charge curve of the new 2400mAh cell.

Compatible Models

7 Plus G2 7 Plus G2 1331

Replaces Part Numbers

790590-001 790591-001 790592-001 790593-001 790594-001 WD3058150P 790587-001

Technical Specifications

Voltage3.7V
Amp Hours2400mAh
Capacity2400mAh
Rate8.88Wh
Net Weight48.6g /1.71 oz
Gross Weight84g /2.96 oz
Approximate Weight84g /2.96 oz
Dimension 152.28 x 58.20 x 2.83mm

Product Highlights

  • Brand: HP
  • Manufacturer: CS
  • Series: Standard
  • Color: Black
  • Product Type: Li-Polymer
  • Battery Type: Li-Polymer
  • Warranty: 12 Months
  • Bulk Orders: sales@batteryweb.com

Frequently Asked Questions

My HP 7 Plus G2 shows 40% battery then cuts off completely — is the new battery faulty?

The battery is almost certainly fine. The HP 7 Plus G2 fuel gauge IC retains the learned voltage curve of the old, degraded cell and applies it to the new one, so it miscalculates the remaining capacity under load. The tablet hits its BMS cutoff voltage at what the gauge still thinks is 40%. Run the tablet down to automatic shutoff, then charge it uninterrupted to 100% — one full cycle resets the gauge map against the new 2400mAh cell.

Fast charging stopped working after I replaced the battery in my HP 7 Plus G2 — what happened?

The HP 7 Plus G2 charge IC uses a handshake with the charger that can stall on the first charge cycle after a new cell is fitted. Until that first full charge completes, the charge controller defaults to a conservative rate rather than the faster negotiated rate. Connect the tablet to its original HP charger and let it run one complete charge to 100% without unplugging — after that cycle the faster charge rate restores on subsequent sessions.

The battery percentage on my HP 7 Plus G2 drops from 100% to 70% within the first few minutes of use — is something wrong?

This is fuel gauge drift, not a cell defect. The gauge IC starts from a stored reference point calibrated to the old battery, so its first reading after a full charge is already offset. Under even light load — screen on, WiFi active — the miscalculated curve drops steeply before it levels out. One full discharge-to-shutoff followed by an uninterrupted charge to 100% corrects the reference point; after that cycle the percentage drop from a full charge will be proportional and steady.

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