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SportDog DC-24 Houndhunter SD-1800 Replacement Battery 7.2V

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From $23.99 USD $29.99
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Fits SportDog Houndhunter SD-1800, Uplandhunter SD-1850, and Wetlandhunter SD-2000 collars; replaces OEM part DC-24.
7.2V 300mAh Ni-MH chemistry delivers consistent voltage across the collar's stimulation and tone circuits during training sessions.
Battery slides into the collar's rear compartment with flat connector orientation; locking tab secures flush against the housing frame.
We bench-tested this cell on the SD-1800 platform; the Ni-MH BMS accepted a full charge cycle without fault codes or cutoff issues.
After installing this battery, take the collar outdoors and allow 5–10 minutes for the GPS module to acquire the first satellite lock before starting training.
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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

7.2V

Amp

300mAh

SportDog SD-1800 / SD-1850 / SD-2000 Series — 7.2V Ni-MH Replacement Battery (DC-24)

This is a 7.2V, 300mAh Ni-MH replacement battery for the SportDog Houndhunter SD-1800 and related training collar models. It replaces OEM part DC-24 (also listed as MH330AAAK6HC, 650-060, and BP1061). Fit models include the Uplandhunter SD-1850, Wetlandhunter SD-2000, and Wetlandhunter ST101-W.

  • SD-1800 / SD-1850 / SD-2000 platform fit: These collars share the same 7.2V Ni-MH cell pack format, connector pinout, and BMS charge curve. One battery SKU covers the full lineup — the pack dimensions (29.71 × 31.00 × 20.76mm) lock it into the same housing cavity across all listed receivers.
  • Bench tested on actual hardware: We cycled this pack through the SD-1800 receiver's charge circuit and confirmed the BMS accepted charge at the expected trickle-then-full rate. Stimulation and tone outputs triggered normally at full charge and down to low-battery threshold.
  • First charge after installation: Ni-MH packs that have been stored at low state-of-charge can show reduced capacity on the first cycle. Run a full charge before field use — the collar's charge indicator should go solid before you head out. Capacity stabilises after 2–3 full cycles.

Why the SD-1800 collar shows low battery immediately after a new pack is installed

Ni-MH cells self-discharge during storage, and a battery sitting in a warehouse for several months may arrive at 30–50% state-of-charge. The SD-1800's onboard voltage monitor reads the resting voltage directly — if the pack hasn't been charged, the collar reports low battery even though the battery is new. This is not a fault with the pack or the collar. Put the collar on the charger for a full cycle before testing stimulation output. Resting voltage on a fully charged 7.2V Ni-MH pack should read between 7.2V and 7.6V.

Collar not responding to the handheld transmitter after battery swap

Removing power from the SD-1800 receiver clears its active link state with the handheld transmitter. The collar does not automatically re-establish the RF link on power-up — it waits for a pairing handshake. After installing the new battery, power the collar on, then follow the transmitter-to-receiver pairing sequence in the SD-1800 manual (hold the transmitter's on/off button until the collar beeps twice). If pairing fails on the first attempt, confirm the collar is showing a solid power LED before retrying — a flashing LED means the battery voltage is still below the collar's operating threshold.

Compatible Models

Houndhunter SD-1800 Uplandhunter SD-1850 Wetlandhunter SD-2000 Wetlandhunter ST101-W Tritronics 200LR UplandHunter SD-1850 ST101-B transmitter SportHunter SD-1800 ST101-S transmitter WetlandHunter SD-2000CAMO ST101-W transmitter

Replaces Part Numbers

DC-24 MH330AAAK6HC 650-060 BP00001061 BP1061

Technical Specifications

Voltage7.2V
Amp Hours300mAh
Capacity300mAh
Rate2.16Wh
Net Weight43.3g /1.53 oz
Gross Weight113.3g /4.00 oz
Approximate Weight113.3g /4.00 oz
Dimension 29.71 x 31.00 x 20.76mm

Product Highlights

  • Brand: SportDog
  • 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 SD-1800 collar beeps and shuts off during training — battery or collar fault?

That shutdown pattern is the collar's low-voltage cutoff triggering under load. Ni-MH packs with degraded cells hold a surface charge that looks fine at rest but collapses the moment the stimulation circuit draws current. Swap in the new pack and run a full charge cycle first. If the shutdown still happens with a freshly charged new battery, check the collar's charge port for corrosion — a dirty contact causes incomplete charging even when the indicator shows full.

Battery drains noticeably faster when training in areas with heavy tree cover or dense brush — is that normal?

Yes. The SD-1800 uses a radio-frequency link between collar and transmitter, and the receiver draws more power when the signal has to penetrate dense vegetation or uneven terrain. The collar's RF circuit stays active and works harder to maintain the link, pulling more current than it would in an open field. There's no fix — it's physics. Carry the transmitter closer to the dog in thick cover to reduce the link load on the collar's receiver.

New battery installed but the SD-1800 collar won't hold a charge — charger light stays green immediately

A charger that flips to green within minutes of connecting means it detected a full-charge voltage before the pack actually reached capacity — usually caused by a voltage spike from a rested Ni-MH pack fooling the charger's delta-V detection. Disconnect, leave the collar off for 10 minutes, then reconnect and charge again. On the second attempt the charger should run a proper full cycle. If it still cuts off early, try a different SportDog-compatible Ni-MH charger — some aftermarket units have delta-V thresholds set too sensitive for 300mAh packs at this voltage.

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