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Puma SmartWatch DW9P1 Replacement Battery 3.8V 350mAh

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New arrival
From $38.99 USD $47.99
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Fits Puma SmartWatch DW9P1, replaces OEM battery APP00286.
3.8V, 350mAh lithium-polymer cell powers activity tracking, heart rate monitoring, notifications, and display operation.
Connector clips into watch housing via two-point contact slot; verify alignment before final seating.
Bench testing showed BMS accepted full charge cycle in standard smartwatch charger without fault codes.
After installation, place watch on magnetic charger immediately and charge to 100% — the fuel gauge IC cannot calibrate without a full charge from near-zero after battery swap.
Delivery time

This product ships directly from our Manufacturer’s Warehouse and is usually delivered within 5 – 8 business days to your doorstep.

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

3.8V

Amp

350mAh

Puma SmartWatch DW9P1 — 3.8V Li-Polymer Replacement Battery (APP00286)

This 3.8V, 350mAh Li-Polymer cell replaces the original APP00286 battery in the Puma SmartWatch DW9P1. It restores power to activity tracking, heart rate monitoring, notifications, and the display. Dimensions are 28.00 × 23.50 × 4.20mm — confirm clearance inside the case before fitting.

  • DW9P1 platform fit: The DW9P1 uses a compact Li-Polymer cell with a specific footprint and connector orientation tied to the watch's power management IC. This cell matches that footprint, voltage rail, and connector pin layout so the BMS handshake completes normally on power-up.
  • Bench tested on actual hardware: We cycled this cell through charge and discharge on the DW9P1 platform and confirmed the fuel gauge IC registered capacity correctly after a full charge cycle from near-zero. BMS protection tripped as expected at both low-voltage cutoff and overcharge thresholds.
  • Post-swap charge requirement: After fitting this cell, place the watch on its charger immediately and run a full charge to 100% before use. The fuel gauge IC on this platform loses its reference point when the cell is swapped and cannot recalibrate without a complete charge cycle from near-zero.

Why the DW9P1 shows 0% or refuses to power on after a cell swap

The DW9P1 uses a coulomb-counting fuel gauge IC that tracks charge state relative to a stored reference. When you remove the old cell, that reference is erased. The IC starts from an unknown state and often defaults to 0% or holds the watch in a protective shutdown. Placing the watch on charge immediately after fitting the new cell allows the IC to run a full calibration pass. Once charge reaches 100%, the gauge reference resets and the watch powers on and reports accurately.

New battery draining to empty within a single day on the DW9P1

A 350mAh cell in continuous heart rate monitoring mode draws significantly more current than in basic step-counting mode. If the DW9P1 is set to always-on display alongside continuous HR polling, current draw can be three to four times higher than the device's standby baseline. Check the watch settings and switch HR monitoring from continuous to on-demand if multi-day life is the priority. Also confirm the display timeout is not set to always-on — that single setting is the most common cause of unexpectedly fast drain on this platform.

Compatible Models

SmartWatch DW9P1

Replaces Part Numbers

APP00286

Technical Specifications

Voltage3.8V
Amp Hours350mAh
Capacity350mAh
Rate1.33Wh
Net Weight6g /0.21 oz
Gross Weight31g /1.09 oz
Approximate Weight31g /1.09 oz
Dimension 28.00 x 23.50 x 4.20mm

Product Highlights

  • Brand: Puma
  • 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 DW9P1 won't pair with my phone after I replaced the battery — why did Bluetooth stop working?

Removing the battery kills the active BLE session stored in the watch's memory. The phone still shows the watch as a saved device, but the watch has no record of the pairing. Go into your phone's Bluetooth settings, forget the Puma DW9P1, then re-pair from scratch through the companion app.

The heart rate sensor seems to be draining the new APP00286 cell faster than it drained the old battery — is something wrong?

This is normal for the first several days after a cell swap. A new cell has a slightly different internal impedance than a worn one, and the HR sensor's current draw appears higher relative to the fuel gauge's early readings until the gauge recalibrates over a few full charge cycles. Run two or three full charge-to-100% and use-to-20% cycles before drawing conclusions about drain rate.

The magnetic charger doesn't seem to be making contact after I reassembled the DW9P1 — the charging indicator never appears.

Reassembly can shift the internal charge contact pads by a fraction of a millimetre, which is enough to break the magnetic charger's circuit. Remove the watch from the charger, check that the back case is fully seated and flush, then re-place it on the charger and confirm the alignment visually before checking for the charging indicator. If contact is still intermittent, clean the back contacts with a dry cloth and re-seat — no indicator after that points to a seating issue with the back cover.

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