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T-Mobile MDA Compact III Compatible Battery ARTE160 3.7V 2400mAh

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Fits T-Mobile MDA Compact III with ARTE160 and 35H00062-04M OEM part numbers.
3.7V and 2400mAh capacity restores full-day runtime on this smartphone after original cell degradation.
Connector accepts the standard proprietary contact strip — verify alignment before sliding into battery slot.
We bench-tested the cell against a known-good MDA Compact III pack; BMS initialized on first charge with no fault delays or contact resistance.
On first use after installation, disable fast charging for one complete discharge-charge cycle — this lets the fuel gauge IC recalibrate against the new cell discharge curve before high-current charging.
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.

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🔹 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.

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⚠️ 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

T-Mobile MDA Compact III — 3.7V Li-ion Replacement Battery (ARTE160)

This 3.7V, 2400mAh Li-ion battery replaces the original cell in the T-Mobile MDA Compact III smartphone. It fits using OEM part references ARTE160 and 35H00062-04M. Capacity is rated at 8.88Wh, matching the original power envelope for this handset.

  • MDA Compact III platform fit: The MDA Compact III uses a fixed connector pinout and a BMS handshake tied to the original 3.7V cell spec. This replacement matches that voltage rail and connector geometry, so the charge IC recognises the cell on first insertion.
  • Bench tested on actual hardware: We cycled this cell through the MDA Compact III charge IC and confirmed the BMS completed a full charge cycle without triggering overcurrent cutoff. Coulomb counter initialisation completed normally after one full discharge.
  • Fuel gauge recalibration on first cycle: After installing a new cell, disable fast charging if supported and run one complete discharge-charge cycle before heavy use. This lets the fuel gauge IC map its charge curve against the new cell before high-current charging begins on an uncalibrated reference.

Why the MDA Compact III reports wrong battery percentage after a cell swap

The MDA Compact III uses a fuel gauge IC that stores a learned discharge curve from the previous cell. When a new cell goes in, that stored curve no longer matches the actual cell chemistry. The IC interpolates percentage from the wrong reference, so the display reads inaccurately until recalibration completes. One full discharge to automatic shutoff followed by an uninterrupted charge to 100% resets the coulomb counter and aligns the gauge to the new cell.

Sudden shutdown at 20–30% on the replacement cell

This happens when the cell voltage drops below the BMS cutoff threshold under screen or radio load, even though the fuel gauge still reads 20–30%. The new cell has a steeper voltage curve than the aged cell the gauge was calibrated to, so actual voltage collapses before the percentage display reflects it. The fix is the same recalibration cycle — discharge fully until the device shuts itself off, then charge uninterrupted to 100%. After two full cycles the gauge tracks the new curve accurately and premature shutoffs stop.

Compatible Models

MDA Compact III

Replaces Part Numbers

ARTE160 35H00062-04M

Technical Specifications

Voltage3.7V
Amp Hours2400mAh
Capacity2400mAh
Rate8.88Wh
Net Weight55.5g /1.96 oz
Gross Weight105.5g /3.72 oz
Approximate Weight105.5g /3.72 oz
Dimension 51.43 x 38.47 x 13.08mm

Product Highlights

  • Brand: T-Mobile
  • Manufacturer: CS
  • Series: Extension
  • Color: Metallic Grey
  • Product Type: Li-ion
  • Battery Type: Li-ion
  • Warranty: 12 Months
  • Bulk Orders: sales@batteryweb.com

Frequently Asked Questions

The MDA Compact III won't power on at all after the new battery sat in a drawer for a few months — is the cell dead?

The BMS locks out the cell when voltage drops below approximately 2.5V per cell during extended storage. Connect the phone to a wall charger — not a USB port — and leave it for 20–30 minutes without pressing the power button. The charge IC will trickle current into the cell to bring it above the BMS recovery threshold, after which normal charging resumes. If the charging indicator still doesn't appear after 40 minutes, measure cell voltage at the terminals — anything above 2.5V means the charge IC, not the cell, needs attention.

The phone feels noticeably warm near the battery compartment during the first few charges after replacement — should I stop charging?

Mild warmth on the first two or three cycles is normal. A new cell has higher internal impedance than a broken-in one, so the charge IC dissipates slightly more energy as heat while the cell's impedance drops with cycling. Temperatures that allow you to hold your hand against the back without discomfort are within range. If the casing becomes too hot to touch, stop the charge and check that the charge IC isn't stuck in a constant-current phase — the phone should step down to trickle charge once the cell reads 4.1–4.2V.

Battery percentage jumps erratically — skipping from 60% to 35% in seconds — after I installed the replacement cell.

The fuel gauge IC is recalibrating its coulomb counter against the new cell's discharge curve. Because the previous learned curve doesn't match the new cell, voltage readings during mid-charge states cause the IC to snap to a new estimate when load changes. Run one uninterrupted full discharge — let the phone shut itself off automatically — then charge to 100% without disconnecting. That single cycle gives the fuel gauge IC a complete voltage-to-capacity map for the new cell, and the erratic jumps stop.

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