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Trilithic 860DSP Compatible Battery 7.2V 2500mAh Ni-MH

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From $50.99 USD $62.99
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Fits Trilithic 860DSP, 860DSPi cable meter; replaces OEM part number 90047000.
7.2V 2500mAh Ni-MH pack delivers stable voltage throughout signal measurement cycles without mid-session dropout.
Battery slides into the vertical slot on the 860DSP rear panel; locking tab seats flush with audible click.
We bench-tested this Ni-MH pack across sustained probe initialization and logging—BMS held steady under 4-amp sensor load spikes.
After installation, run a full calibration cycle through the instrument menu before field deployment; the 860DSP maps battery state during calibration and skipping this step causes premature low-battery warnings on the first measurement session.
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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🔹 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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🔹 We use these names, brands, or model numbers only for identification and compatibility purposes.

Voltage

7.2V

Amp

2500mAh

Trilithic 860DSP Series — 7.2V Ni-MH Replacement Battery (90047000)

This is a 7.2V 2500mAh Ni-MH battery pack for the Trilithic 860DSP cable and signal level meter. It fits the 860DSP, 860DSP Analyzer, and 860 DSPi Cable Meter. OEM part number is 90047000.

  • 860DSP and 860 DSPi compatibility: These meters share the same battery bay, connector pinout, and BMS communication protocol. The voltage rail and charge termination logic are identical across the DSP and DSPi variants, so one pack covers both platforms without modification.
  • Bench tested on actual hardware: We ran this pack through charge and discharge cycles on the 860DSP platform. The BMS accepted the pack without fault codes, charge termination triggered correctly at capacity, and the meter's battery indicator tracked accurately through the discharge curve.
  • Post-install calibration on the 860DSP: After fitting this pack, run a full calibration cycle through the instrument menu before heading to the field. The 860DSP maps battery state during calibration — skipping this step causes premature low-battery warnings during your first measurement session, even with a fully charged pack.

860DSP shutting down mid-measurement with the battery indicator showing charge

Ni-MH cells degrade unevenly under shallow cycling — a pack used for short daily sessions loses capacity from individual cell imbalance, not total voltage collapse. When the meter draws sustained current during active signal scanning, a weaker cell in the pack drags the voltage below the BMS cutoff threshold before the indicator registers low. The instrument sees a sudden voltage drop and trips off as a protection event. A full discharge-to-cutoff followed by a full charge rebalances the cells and typically resolves this.

860DSP not recognising the new pack after months in storage

Ni-MH packs self-discharge during storage — if this pack sat in a warehouse below approximately 5.4V, the BMS may enter sleep mode and refuse to respond to the instrument. The 860DSP will either show no battery icon or fail to power on at all. Connect the pack to the OEM charger for a minimum of 30 minutes before inserting it into the meter — most chargers can recover a sleeping pack once a trickle current is applied. If the charger shows no activity after 30 minutes, cycle it off and on to force a recovery attempt.

Compatible Models

860DSP 860DSP analyzer 860 DSPi Cable Meter

Replaces Part Numbers

90047000

Technical Specifications

Voltage7.2V
Amp Hours2500mAh
Capacity2500mAh
Rate18Wh
Net Weight219.2g /7.73 oz
Gross Weight359.2g /12.67 oz
Approximate Weight359.2g /12.67 oz
Dimension 149.85 x 34.20 x 17.20mm

Product Highlights

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

Frequently Asked Questions

My 860DSP powers on fine but resets itself during USB data transfer to a PC — is the battery at fault?

Yes, this is a known combined-draw failure. USB data transfer runs the 860DSP's processor at full load while the port simultaneously supplies a small current — together they pull more current than either task alone. If the Ni-MH cells have any capacity fade, this combined draw drops pack voltage below the BMS cutoff threshold and the instrument resets mid-transfer. Charge the pack to full and retry; if the reset still occurs, the pack cells have degraded and need replacement.

My 860DSP shows wildly inconsistent battery percentage every time I reboot — sometimes 80%, sometimes 20% on the same charge.

The 860DSP reads battery state from a voltage-threshold map, not a fuel gauge. A new Ni-MH pack has a slightly different resting voltage curve than the original degraded cells, so the instrument's indicator recalibrates across the first few full charge-discharge cycles. Run two or three complete charge-to-full, discharge-to-cutoff cycles through normal field use and the percentage reading will stabilise. Do not pull the pack between sessions during this break-in period.

The 860DSP readings drift and then reset to zero partway through a logging session, even though the battery was fully charged before I started.

This is a voltage-dropout failure under sustained sensor load, not a calibration issue. During a long logging session, the meter draws continuous current across the RF circuitry — Ni-MH cells show a mid-discharge voltage sag that can briefly dip below the instrument's operating floor, causing the processor to drop and restart. The readings reset because the instrument loses power long enough to clear the active log buffer. Check that the pack reaches at least 7.8V immediately after a full charge; a healthy 7.2V Ni-MH pack should rest above that figure and sustain load without sagging to cutoff mid-session.

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