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Pax A910 Payment Terminal Compatible Battery YW-002 7.4V

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From $30.99 USD $38.99
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Fits Pax A910 and A930 payment terminals, replaces OEM part YW-002.
7.4V, 2600mAh capacity delivers 19.24Wh — enough for a full business day of card transactions and receipt printing without mid-shift recharge.
Connector slides straight into the battery slot with a single locking tab; orientation is keyed to prevent reverse insertion.
We bench-tested this cell in an A910 unit — BMS accepted the handshake on first boot, voltage held steady under combined display and printer draw, no early cutoff on high-current receipt cycles.
After installation, run one complete transaction cycle including card read and receipt print before live deployment — the terminal calibrates its charge indicator during normal operation and needs one full power cycle to map battery capacity accurately.
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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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⚠️ 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

7.4V

Amp

2600mAh

Pax A910 / A930 — 7.4V Li-ion Replacement Battery (YW-002)

This is a 7.4V Li-ion battery rated at 2600mAh (19.24Wh), built to the YW-002 specification. It fits the Pax A910 and A930 portable payment terminals. Both models share the same battery bay, connector pinout, and BMS handshake protocol.

  • A910 and A930 compatibility: Both terminals run the same 7.4V power rail and use the same physical connector with identical BMS communication lines. One battery covers both devices — no wiring or adapter differences to account for.
  • Bench tested on actual hardware: We cycled this battery through a full charge-discharge sequence on the A910. The BMS accepted the cell without fault codes, the charge IC moved through CC/CV phases normally, and the terminal reported state-of-charge accurately after one complete power cycle.
  • First deployment tip for payment terminals: After installation, complete one full transaction cycle before deploying in a live environment. The terminal maps battery capacity during normal operation and needs at least one complete power cycle to calibrate the charge indicator correctly.

Why the A910 reboots mid-transaction after a battery swap

The A910's receipt printer draws a short high-current spike when the print head fires. On a new or partially initialised battery, the BMS can interpret this spike as an overcurrent event and trip the protection circuit, cutting power to the terminal mid-transaction. This is more common in the first few cycles before the BMS has profiled the cell. Running two or three complete transaction sequences — including printed receipts — before live deployment reduces this behaviour significantly.

Terminal not completing PCI boot sequence on new battery

The A910 runs a PCI security boot check that requires stable voltage throughout the sequence. If the battery cell voltage is below approximately 7.0V on arrival — common after storage — the terminal may stall or loop at the boot screen before reaching the home menu. Connect the terminal to the charge cable and allow it to charge for at least 20 minutes before attempting a cold boot. Once the cell reaches mid-range voltage, the boot sequence completes normally.

Compatible Models

A910 A930

Replaces Part Numbers

YW-002 XKD_173

Technical Specifications

Voltage7.4V
Amp Hours2600mAh
Capacity2600mAh
Rate19.24Wh
Net Weight94.4g /3.33 oz
Gross Weight119.4g /4.21 oz
Approximate Weight119.4g /4.21 oz
Dimension 67.10 x 37.50 x 20.70mm

Product Highlights

  • Brand: Pax
  • Manufacturer: CS
  • Series: Standard
  • Color: Blue
  • Product Type: Li-ion
  • Battery Type: Li-ion
  • Warranty: 12 Months
  • Bulk Orders: sales@batteryweb.com

Frequently Asked Questions

My Pax A910 shows the battery stuck at 99% and won't move — is something wrong with the new battery?

Nothing is wrong. When a new Li-ion cell first charges, the charge IC enters a top-off mode that holds the display near full while the cell absorbs the final trickle current. The indicator stays at 99% until the terminal completes a full discharge-and-recharge cycle, at which point the fuel gauge recalibrates against the actual cell capacity. Run the terminal through one full business use and a complete recharge — the indicator will track normally after that.

The A910 was sitting unused in a drawer for a few months and now won't power on at all — what's happening?

Li-ion cells self-discharge over time, and if the terminal sat long enough for the cell to drop below the BMS recovery threshold (typically around 2.5V per cell), the protection circuit locks out to prevent damage. Install the new YW-002 battery, connect the original charge cable, and leave it charging without pressing the power button for at least 30 minutes. The BMS needs sustained input voltage to exit lockout before the terminal will respond to a power-on press.

The A910 gets noticeably warm during a busy transaction period — is that a battery issue or a terminal issue?

Warmth during heavy use is normal under combined load. The A910 simultaneously drives the touchscreen, wireless radio, and receipt printer — all three drawing from the same 7.4V cell at once. The battery itself generates heat as current draw increases, and the terminal's processor adds to that. If the terminal stays warm but does not shut down or throw a thermal warning, no action is needed. If it shuts down, let it cool for five minutes, then check that the battery contacts are clean and fully seated.

Payment & Security

Payment methods

  • American Express
  • Apple Pay
  • Diners Club
  • Discover
  • Google Pay
  • Mastercard
  • PayPal
  • Shop Pay
  • Visa

Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.

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