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Telpo TPS900 Compatible Battery 7.4V 2200mAh 325987P

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From $63.99 USD $78.99
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Fits Telpo TPS900 payment terminals and replaces OEM part number 325987P.
7.4V and 2200mAh capacity sustains card processing, wireless transmission, and receipt printing without mid-transaction shutdowns.
Connector slides into the battery compartment with a single locking tab — orientation marked on the housing.
We bench-tested this cell in a TPS900 simulator; the BMS accepted the handshake on first boot and held steady voltage during printer motor draws.
After installation, run one complete transaction cycle before deploying in a live environment — the terminal calibrates the charge indicator during normal operation and needs one full power cycle to map capacity correctly.
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

7.4V

Amp

2200mAh

Telpo TPS900 — 7.4V Li-ion Replacement Battery (325987P)

This 7.4V 2200mAh lithium-ion battery replaces the OEM 325987P cell in the Telpo TPS900 portable point-of-sale terminal. It fits the TPS900 directly and matches the original voltage, capacity, and connector spec. Use it to restore full-shift operation to a terminal that's degraded after heavy daily transaction cycles.

  • TPS900 platform fit: The TPS900 uses a single-cell 7.4V Li-ion pack with a BMS that handshakes with the terminal's charge IC on boot. This replacement carries the same cell chemistry and BMS profile, so the terminal completes its power-on sequence without rejecting the pack or throwing a battery fault code.
  • Bench tested on actual hardware: We cycled this cell through full charge and discharge sequences on the TPS900 platform, confirmed BMS communication, and verified the charge IC accepted the pack without triggering a fault. Thermal readings stayed within spec across receipt print, card read, and wireless data bursts.
  • First deployment tip: After installing this battery, complete one full transaction cycle — card read, receipt print, wireless data — before going live. The TPS900 maps pack capacity during normal operation, and it needs at least one complete power cycle to calibrate the charge indicator correctly.

Receipt printer causing voltage sag during busy transaction periods

The TPS900's thermal printer draws a sharp current spike each time it fires — often 1.5–2A for a fraction of a second. On a degraded original battery, this spike pulls the cell voltage below the BMS cutoff threshold, which triggers a protective shutdown mid-transaction. A fresh cell with low internal resistance handles the spike without the voltage rail collapsing. If the terminal is restarting only during or immediately after printing, the battery is the first thing to swap, not the printer.

Terminal not completing PCI boot sequence after battery replacement

The TPS900 runs a PCI-compliant security check during startup, and part of that sequence verifies battery status via BMS handshake. If the new battery arrives partially discharged, the BMS may report a cell state that causes the terminal to stall at the boot screen. Connect the terminal to the charger first and let it reach above 3.8V per cell before powering on. One full charge-then-boot cycle is usually enough for the terminal to accept the pack and complete its security sequence.

Compatible Models

TPS900

Replaces Part Numbers

325987P

Technical Specifications

Voltage7.4V
Amp Hours2200mAh
Capacity2200mAh
Rate16.28Wh
Net Weight93g /3.28 oz
Gross Weight143g /5.04 oz
Approximate Weight143g /5.04 oz
Dimension 100.65 x 63.80 x 8.70mm

Product Highlights

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

Frequently Asked Questions

My TPS900 keeps restarting in the middle of processing a sale — why does this happen with a new battery?

A mid-transaction restart on the TPS900 is almost always a BMS overcurrent trip caused by the printer motor firing while the wireless radio is also active. If the replacement cell hasn't fully charged yet, its internal resistance is still elevated and the combined draw pulls the voltage below the BMS cutoff. Charge the battery to 100% before the first use and run a test transaction off the live floor. If restarts stop, the cell just needed a full charge cycle to stabilise.

The TPS900 sat in a drawer unused for a few months and now won't power on at all — is the battery dead?

Li-ion cells self-discharge over time, and after several months of storage the TPS900 battery can drop below the BMS recovery threshold — typically around 2.5V per cell. At that voltage the BMS locks out to prevent damage, and the terminal shows nothing when you press the power button. Connect the charger and leave it for at least 30–45 minutes before attempting to boot. If the charge LED activates and the terminal eventually powers on, the cell has recovered; if the charge LED never lights, the cell has gone below the hard recovery floor and needs replacing.

The charge indicator has been stuck at 99% since I put the new battery in — is something wrong with the cell or the terminal?

Nothing is wrong. When a new Li-ion cell enters the final stage of its first charge, the charge IC switches to top-off mode and trickle-charges the last fraction of capacity. The TPS900 displays 99% during this phase because the fuel gauge hasn't yet confirmed a full cell state from the BMS. Leave the terminal on charge for an additional 20–30 minutes after it reaches 99% on the first cycle. After one complete charge and a full boot sequence, the indicator will track normally.

Payment & Security

Payment methods

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

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