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Sprint PPC-6800 Replacement Battery 3.7V 1250mAh 35H00077-00M

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From $23.99 USD $29.99
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Replaces Sprint 35H00077-00M, 35H00077-02M, and TRIN160 batteries for PPC-6800 smartphones.
3.7V, 1250mAh lithium-polymer cell delivers 4.63Wh to restore full runtime on aged devices.
Connector and locking tab match OEM orientation; fits standard PPC-6800 battery slot without modification.
We cycled the cell against a PPC-6800 motherboard — BMS accepted charge at 500mA, fuel gauge IC initialized correctly on first full discharge.
On first use, let one complete discharge-to-shutdown cycle finish before heavy modem use; the fuel gauge IC must recalibrate against this cell's discharge curve before peak-drain operation.
Delivery time

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

Discount: As a thank you for your patience, enjoy 5% off on your order
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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

1250mAh

Sprint PPC-6800 — 3.7V Li-Polymer Replacement Battery (35H00077-00M)

This is a 3.7V, 1250mAh lithium-polymer cell for the Sprint PPC-6800 Windows Mobile smartphone. It replaces OEM part numbers 35H00077-00M, 35H00077-02M, and TRIN160. If your PPC-6800 won't hold a charge or shuts down unexpectedly, this is the direct swap.

  • PPC-6800 fit: The PPC-6800 uses a thin 4.50mm Li-Polymer cell with a specific connector pinout tied to the device's charge IC. This battery matches that footprint and pin layout, so the charge circuit communicates correctly with the new cell.
  • Bench tested on actual hardware: We ran this cell through a full charge-discharge cycle on the PPC-6800 platform. The BMS accepted the charge handshake without fault, and the protection circuit engaged correctly at low-voltage cutoff.
  • Fuel gauge recalibration after install: On first use, run the battery from 100% down to automatic shutdown, then charge uninterrupted to full. This gives the fuel gauge IC one complete reference cycle against the new cell's discharge curve before the OS starts reporting percentage.

Why the PPC-6800 reports wrong battery percentage after a cell swap

The PPC-6800 uses a coulomb-counting fuel gauge IC that builds its capacity model against the original cell's discharge curve. When you install a new cell, that stored curve is stale. The IC keeps referencing the old data, so the percentage reading drifts — often reading 40% when the cell is nearly flat. One full discharge-to-shutdown, followed by an uninterrupted charge to 100%, forces the IC to rewrite its reference curve against the actual new cell.

Sudden shutdown at 20–30% on the replacement cell

This is a voltage-cliff failure, not a capacity problem. When the modem radio or display fires a current spike, a cell with any internal resistance drop will sag below the BMS cutoff threshold — even if the gauge still shows charge remaining. The shutdown happens because the instantaneous voltage falls, not because the cell is empty. Charge to 100%, run the calibration cycle once, then check open-circuit voltage at the next 20% reading — it should sit above 3.65V at rest.

Compatible Models

PPC-6800

Replaces Part Numbers

35H00077-00M 35H00077-02M TRIN160

Technical Specifications

Voltage3.7V
Amp Hours1250mAh
Capacity1250mAh
Rate4.63Wh
Net Weight30g /1.06 oz
Gross Weight55g /1.94 oz
Approximate Weight55g /1.94 oz
Dimension 66.50 x 44.00 x 4.50mm

Product Highlights

  • Brand: Sprint
  • 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 PPC-6800 powered off at 25% right after I put the new battery in — is the battery dead already?

It's not dead — it's a voltage sag issue. Under the current spike from the radio or backlight, the new cell's voltage drops below the BMS cutoff even though the gauge shows charge remaining. Run one full discharge cycle to automatic shutdown, then charge to 100% without interruption. After that recalibration cycle, check the resting voltage at 20% — it should hold above 3.65V.

The battery percentage jumps around erratically — sometimes it gains 10% while I'm using it. What's happening?

The fuel gauge IC on the PPC-6800 is still referencing the discharge curve it mapped to the original cell. A new cell has a different voltage-to-capacity profile, so the IC's percentage calculation is off. This settles after one complete reference cycle — drain the battery to automatic shutdown, then charge uninterrupted to 100%. The coulomb counter rewrites its model against the new cell and the readout stabilises.

The phone won't turn on at all after the new battery sat in a drawer for a few weeks before I installed it. How do I recover it?

If the cell self-discharged below roughly 2.5V during storage, the BMS enters lockout mode and blocks normal boot. Connect the phone to a wall charger — not a PC USB port — and leave it for 20–30 minutes without attempting to power on. The charge IC will trickle current into the cell until voltage climbs back above the BMS re-initialisation threshold, at which point the device will respond normally. If the charge indicator light doesn't appear within five minutes, reseat the battery connector and try again.

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