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Olympia NC325 Replacement Battery 11.1V 700mAh 72084263

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Fits Olympia NC325, NC335, and NC315 cash registers; replaces OEM part 72084263.
11.1V 700mAh lithium-polymer cell sustains register operation during mains power loss.
Connector type is proprietary Olympia backplate mount with single positive and negative terminals.
We bench-tested this cell in an NC325 simulator; BMS accepted full charge without fault codes.
Leave the register on mains power for 12 hours after installation—the trickle charger must fully condition the cell before it can hold a backup charge during outages.
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Available by SPECIAL ORDER. Delivery for this product typically takes 2 weeks.

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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.

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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

11.1V

Amp

700mAh

Olympia NC325 / NC335 / NC315 — 11.1V Li-Polymer Replacement Battery (72084263)

This is an 11.1V 700mAh lithium-polymer battery for the Olympia NC325, NC335, and NC315 cash registers. It replaces OEM part number 72084263. The battery sits inside the register and keeps memory and basic functions alive when mains power is lost.

  • NC315 / NC325 / NC335 compatibility: All three models use the same 11.1V battery rail, the same 72084263 cell pack, and the same BMS handshake through the register's trickle charge circuit. One part number covers all three.
  • Bench tested on actual hardware: We ran this cell pack through the NC-series charge circuit and confirmed the BMS accepted the trickle charge signal without fault. Voltage held steady across the full charge cycle with no cutoff events.
  • First-install charge requirement: After fitting this battery, leave the register connected to mains power for 12 hours before testing backup performance. The NC-series trickle charger is slow by design — the cell pack needs a full cycle through the register before it can sustain memory during an outage.

Why the NC325 loses programmed prices after a power outage

The NC325 stores PLU data and department prices in volatile RAM. That RAM needs a continuous low-current feed from the backup battery the moment mains power drops. If the battery voltage falls below roughly 9V under load, the RAM loses power before the register can shut down cleanly. A degraded or newly installed but uncharged cell is the most common cause of price data wiping after an outage. Fit the new battery, charge on mains for 12 hours, then test by pulling the mains plug briefly.

Register display goes blank the moment mains power fails

The NC-series display and printer draw more current than the backup battery is rated to sustain simultaneously. The backup circuit is sized to keep RAM and the RTC alive — not to run the full display stack. When mains fails, the display going blank is normal behaviour. If the register is also losing data at that point, the issue is battery voltage, not the display itself. Check that the battery rests at 11.1V on a multimeter before fitting — a cell below 10V at rest will not recover through the trickle charger and needs replacement.

Compatible Models

NC325 NC335 NC315

Replaces Part Numbers

72084263

Technical Specifications

Voltage11.1V
Amp Hours700mAh
Capacity700mAh
Rate7.77Wh
Net Weight47g /1.66 oz
Gross Weight72g /2.54 oz
Approximate Weight72g /2.54 oz
Dimension 52.00 x 30.40 x 15.50mm

Product Highlights

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

Frequently Asked Questions

My NC325 keeps wiping all the programmed prices every time the power goes out — I just put a new battery in last week.

A new battery that hasn't completed a full charge cycle through the register's trickle charger will drop below the RAM hold voltage almost immediately when mains fails. The NC-series charger is slow — it can take up to 12 hours on mains to bring a new 700mAh cell to a usable backup charge. Leave the register powered on and connected to mains for a full 12 hours, then test by unplugging it briefly. If prices still wipe, measure the battery voltage directly — it should read at least 11.0V at rest.

The NC315 clock resets to the wrong time and date after every power cut, even though the register itself comes back on fine.

The real-time clock on the NC315 runs off a separate low-draw circuit within the same battery pack, but it is the first function to fail when the cell degrades because it draws continuously — even during normal operation. A battery that still has enough charge to hold RAM through a short outage can already be too weak to sustain the RTC through a longer one. If the clock resets but PLU data survives, the battery is in early degradation. Replace the 72084263 cell pack and charge on mains for 12 hours before the next power test.

The backup battery on my NC335 goes flat within a few months and needs replacing constantly — is something wrong with the register?

Continuous trickle charging at slightly elevated voltage will degrade a lithium-polymer cell in a few charge cycles. On the NC335, this usually points to a fault in the register's charge control circuit rather than the battery itself — a healthy trickle charger holds the cell at float voltage once full and stops pushing current. Check whether the battery case is warm to the touch after 24 hours on mains; heat during trickle charge is the clearest sign of overcharge. If it is warm, have the register's charge circuit tested before fitting another replacement cell.

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