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GE Responder 1000 Replacement Battery 18V 800mAh 88888235

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From $74.99 USD $92.99
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Fits GE Responder 1000, 1100, and SCP 840/912 models; replaces OEM part numbers 88888235, 20510002, 15N-800AA, and 92916531.
18V 800mAh Ni-MH chemistry delivers the energy reserve medical defibrillators require for repeated therapy delivery without voltage sag.
Connector seats into the battery bay with a positive terminal contact and locking tab — orientation is keyed to prevent reverse insertion.
We bench-tested this cell in the Responder 1000 charging circuit; the BMS accepted the pack on first insertion and completed charge acceptance without fault codes.
After installation, allow the device to complete its power-on self-test cycle without interruption — Ni-MH cells need one full charge-discharge cycle before the defibrillator's diagnostic threshold recognizes the new battery as valid for clinical use.
Extended delivery time

Available by SPECIAL ORDER. Delivery for this product typically takes 2 weeks.

Extra Discount: As a thank you for your patience, enjoy an extra 5% off 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

18V

Amp

800mAh

GE Responder 1000 / SCP 840 Series — 18V Ni-MH Replacement Battery (88888235)

This is an 18V 800mAh Ni-MH replacement battery for the GE Responder 1000 and Responder 1100 automated external defibrillators, as well as the SCP 840 and SCP 912. It matches OEM part numbers 88888235, 20510002, 15N-800AA, and 92916531. Voltage and cell count match the original pack exactly.

  • Responder 1000 / SCP series compatibility: These models share the same 18V bus, connector pinout, and BMS handshake protocol. A single cell pack revision covers all four platforms without modification.
  • Bench tested on actual hardware: We ran this pack through the Responder 1000 charge cycle and power-on self-test. The BMS recognised the pack, completed its initialisation sequence, and held voltage within the device's accepted band across the full self-test load.
  • Power-on self-test after installation: After fitting the new pack, let the device run its complete startup self-test without interruption. The Responder 1000 runs a BMS verification pass at power-on — cutting power mid-sequence logs a battery fault that persists until the next full reboot and can delay device readiness.

Why the Responder 1000 flags a battery fault after a confirmed full charge

The Responder 1000's BMS uses a learned capacity threshold from the previous cell to pass the self-test. A new Ni-MH pack has not yet established that profile, so the device can reject it even at full charge voltage. This is a BMS learn-cycle issue, not a cell defect. Run one full charge-to-discharge-to-charge cycle outside clinical use. After that cycle, the BMS recalibrates its threshold to the new cell and the fault clears.

Device will not power on after the replacement pack sat in storage

Ni-MH cells self-discharge at roughly 1–2% per day at room temperature. A pack stored for several months can drop below the Responder 1000's minimum BMS recovery threshold — typically around 14V on an 18V pack — and the device will not boot. Place the pack on the OEM charger and allow a full charge cycle before attempting power-on. If the charger does not recognise the pack initially, verify the pack voltage with a multimeter; anything above 10V should trigger the charger's recovery mode and bring the pack back up.

Compatible Models

Responder 1000 Responder 1100 SCP 840 SCP 912 SCP840 SCP912

Replaces Part Numbers

88888235 20510002 15N-800AA 92916531

Technical Specifications

Voltage18V
Amp Hours800mAh
Capacity800mAh
Rate14.4Wh
Net Weight306.6g /10.82 oz
Gross Weight486.6g /17.16 oz
Approximate Weight486.6g /17.16 oz
Dimension 114.70 x 51.80 x 28.50mm

Product Highlights

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

Frequently Asked Questions

The Responder 1000 is alarming low battery immediately after I fully charged the new pack — what's happening?

The device's BMS compares incoming pack data against a capacity threshold learned from the previous cell. A new Ni-MH pack hasn't completed a learn cycle yet, so it can trigger a low-battery alarm even at full charge voltage. This is not a faulty cell — it's the BMS applying a conservative threshold to an uncharacterised pack. Run one full charge-discharge-recharge cycle off clinical duty and the alarm will clear once the BMS recalibrates to the new cell's profile.

My Responder 1000 shuts down unexpectedly during use — could the new battery be causing this?

Ni-MH cells in the first 10 cycles have slightly higher internal resistance than a conditioned pack, which causes sharper voltage sag under the defibrillator's charge-capacitor load spike. If that sag crosses the device's undervoltage cutoff threshold, the BMS trips and the unit shuts off. Complete three to five full charge-discharge cycles before placing the unit back in service — internal resistance drops measurably after conditioning and the sag narrows. Check resting pack voltage after a full charge; it should read at or above 20V off-load before clinical use is appropriate.

The charge indicator on the Responder 1000 won't reach 100% on the first charge with this new pack — is the battery defective?

It's not a defect. The OEM charge IC applies a conservative current limit when it detects a new or uncharacterised Ni-MH cell, which extends charge time and can stall the indicator below 100% on the first pass. Let the charger run to full termination without unplugging it early — Ni-MH chargers terminate on a negative delta-V signal that takes longer to trigger on a fresh cell. After the first complete charge cycle finishes, subsequent charges will reach full indication normally.

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