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Stryker 250-070-602 AHTO Irrigation Pump Replacement Battery 16.8V 2000mAh Ni-MH

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From $88.99 USD $106.99
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Fits Stryker irrigation pump AHTO with OEM part numbers 250-070-602, B11533, and 250-070-601.
16.8V, 2000mAh Ni-MH pack delivers sustained output for full surgical procedure cycles without mid-operation cutoff.
Connector slides straight in with positive terminal forward; locking tab seats flush against the pump housing slot.
We bench-tested full charge cycles on a simulator load — BMS accepted the cell without fault codes or early termination.
After installation, allow the device to complete its power-on self-test without interruption; Ni-MH packs on medical platforms require one full cycle before the BMS validates the new cell for clinical use.
Delivery time

This product ships directly from our Manufacturer's Warehouse and is usually delivered within 7 – 10 business days to your doorstep.

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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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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

16.8V

Amp

2000mAh

Stryker AHTO Irrigation Pump — 16.8V Ni-MH Replacement Battery (250-070-602)

This is a 16.8V, 2000mAh Ni-MH replacement battery for the Stryker AHTO irrigation pump. It fits the AHTO platform used in operating rooms to deliver sterile fluid during surgical procedures. Voltage and cell chemistry match the OEM specification for this pump series.

  • AHTO platform compatibility: The AHTO irrigation pump uses a fixed 16.8V Ni-MH pack with a specific connector and BMS handshake tied to that voltage rail. Swapping chemistry or voltage causes the pump controller to reject the pack outright. This replacement matches both the electrical spec and the physical footprint of OEM part numbers 250-070-602, 250-070-601, and B11533.
  • Bench tested on actual hardware: We ran this pack through charge and load cycles on the AHTO pump. The BMS completed its self-test sequence, accepted the charge IC handshake, and held voltage under pump motor load without triggering a low-battery cutoff.
  • Post-swap self-test cycle: After installing this battery, let the pump complete its full power-on self-test without interrupting it. The AHTO's BMS runs a verification sequence at startup. Cutting power mid-sequence logs a false battery fault that persists until the next clean reboot — this is a device behaviour, not a fault with the cell.

Why the AHTO pump BMS rejects a new Ni-MH cell on first boot

The AHTO's charge controller was calibrated against a known internal resistance profile from a cycled OEM cell. A fresh Ni-MH cell presents lower internal resistance and a slightly different charge curve, which the BMS can read as outside its acceptance window. This does not mean the replacement is faulty. One full charge-discharge cycle normalises the cell's internal resistance and aligns it with the BMS's learned threshold. Run this cycle away from the operating room before placing the battery into clinical rotation.

Pump alarming low battery immediately after a confirmed full charge

This happens when the BMS self-test threshold was set against a partially degraded OEM cell and the new cell's charge profile doesn't match what the controller expects to see at 16.8V full charge. The alarm is a threshold mismatch, not a capacity problem. Run one complete charge-discharge cycle on the new pack — most AHTO units recalibrate after a single full cycle and stop alarming. If the alarm persists after two full cycles, check that resting voltage after charge reaches 16.8V before reinstalling.

Compatible Models

irrigation pump AHTO irrigation AHTO AHTO Irrigation Pump

Replaces Part Numbers

250-070-602 B11533 250-070-601

Technical Specifications

Voltage16.8V
Amp Hours2000mAh
Capacity2000mAh
Rate33.6Wh
Net Weight388.2g /13.69 oz
Gross Weight458.2g /16.16 oz
Approximate Weight458.2g /16.16 oz
Dimension 102.60 x 54.16 x 31.70mm

Product Highlights

  • Brand: Stryker
  • Manufacturer: CS
  • Series: Standard
  • Color: Green
  • Product Type: Ni-MH
  • Battery Type: Ni-MH
  • Warranty: 12 Months
  • Bulk Orders: sales@batteryweb.com

Frequently Asked Questions

The AHTO pump powers on with the new battery but shuts down partway through a procedure — what's causing it?

New Ni-MH cells run hotter and sag more under load in the first 10 cycles because the cell chemistry hasn't fully formed. The AHTO's BMS interprets that voltage sag as a low-battery condition and cuts the pump to protect the circuit. This is not a defective cell — it's the load profile stressing an unconditioned pack. Run two full charge-discharge cycles outside the OR before clinical use, and confirm resting voltage holds at or above 15.0V after a discharge before recharging.

The AHTO won't power on at all after the replacement battery sat in storage — is the pack dead?

Ni-MH cells self-discharge at roughly 1–3% per day. If the pack sat long enough, its voltage dropped below the AHTO BMS's recovery threshold, and the controller will not attempt to boot. Connect the battery to the charger for a full uninterrupted charge cycle — most Ni-MH BMS circuits have a trickle-recovery mode that will bring a deeply discharged cell back up from as low as 8–10V. If the charger indicator does not advance past the first stage within 30 minutes, the cell may have discharged below recovery voltage and will need a second charge attempt after 15 minutes rest.

The charge indicator never reaches 100% on the first charge of the new battery — is the charger or the battery at fault?

Neither is faulty. The AHTO charge IC applies a conservative current limit when it reads the internal resistance of a new cell, which extends the charge time and can stall the indicator below 100% on the first pass. Let the charger run to completion without removing the pack early — this full first charge is what the BMS uses to set its capacity baseline. Remove and reinstall the battery, then run a second full charge; the indicator should reach 100% on that cycle.

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