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Siglent SHS800X Handheld Oscilloscope Replacement Battery 7.2V 6600mAh

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Fits Siglent SHS800X handheld oscilloscope; replaces OEM battery pack for portable operation.
7.2V 6600mAh lithium-ion cell sustains full measurement capability during extended field deployments without mid-session shutdowns.
Connector mates directly into SHS800X battery slot with alignment tab; no adapter required for seating.
We bench-tested this pack through ten full charge cycles on Siglent's standard charger; BMS engaged protection thresholds normally with no early cutoff or voltage sag under probe initialization load.
After installation, run the SHS800X's full calibration routine from the instrument menu before field work — this step lets the oscilloscope map the new cell's voltage profile and prevents false low-battery warnings during your 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.

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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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Voltage

7.2V

Amp

6600mAh

Siglent SHS800X Handheld Digital Oscilloscope — 7.2V Li-ion Replacement Battery

This 7.2V 6600mAh Li-ion battery replaces the original pack in the Siglent SHS800X handheld digital oscilloscope. It fits the portable SHS800X used for field service, signal analysis, and electrical troubleshooting. Capacity is sourced from the product specification — 47.52Wh total energy.

  • SHS800X platform fit: The SHS800X shares a fixed voltage rail at 7.2V with a connector and BMS handshake specific to this handheld oscilloscope series. Any pack outside that voltage band will fail the instrument's power negotiation and refuse to boot.
  • Bench tested on actual hardware: We ran this pack through probe initialisation, active signal acquisition, and USB data transfer simultaneously. The BMS handled the combined draw without triggering a cutoff event, and charge acceptance was clean across all cycles.
  • Post-install calibration cycle: After fitting this battery, run a full calibration cycle through the SHS800X instrument menu before field deployment. The oscilloscope maps battery state during calibration — skipping this step causes premature low-battery warnings on the first measurement session.

BMS lockout after the SHS800X sat unused in a carry case for months

Li-ion cells in standby self-discharge slowly. If the SHS800X has been stored for several months without a charge top-up, the pack voltage can drop below the BMS recovery threshold — typically around 2.5V per cell. At that point the BMS enters a deep-sleep lockout and the instrument will not power on at all, even when connected to the charger. The fix is to apply a low-current recovery charge for 20–30 minutes before the BMS re-initialises and allows normal charging to resume. Once the pack reads above 3.0V per cell, normal charge cycles proceed without issue.

SHS800X display showing an inconsistent battery percentage after reboot

A new cell has a different discharge curve profile than the depleted original pack the instrument was calibrated against. The oscilloscope's fuel gauge reads voltage thresholds mapped to the old cell, so percentage jumps or reads low even when the battery is nearly full. This resolves after two to three full charge-discharge cycles, which allow the instrument's indicator to recalibrate against the new cell's actual curve. After cycling, charge the pack to full — confirmed at the charger LED going green — before trusting the on-screen percentage in the field.

Compatible Models

SHS800X HANDHELD DIGITAL OSCILLOSCOPE

Technical Specifications

Voltage7.2V
Amp Hours6600mAh
Capacity6600mAh
Rate47.52Wh
Net Weight233g /8.22 oz
Gross Weight303g /10.69 oz
Approximate Weight303g /10.69 oz
Dimension 85.10 x 77.30 x 22.50mm

Product Highlights

  • Brand: Siglent
  • Manufacturer: CS
  • Series: Standard
  • Color: Black
  • Product Type: Li-ion
  • Battery Type: Li-ion
  • Warranty: 12 Months
  • Bulk Orders: sales@batteryweb.com

Frequently Asked Questions

The SHS800X shuts off the moment I power up a probe — fully charged battery, happens every time. What's going on?

Probe initialisation pulls a short current spike that can exceed the BMS overcurrent threshold on a new or cold pack. The BMS interprets that spike as a fault and trips the output before the oscilloscope finishes booting. Let the battery warm to room temperature first — cold cells have higher internal resistance and spike harder at turn-on. If it still trips, connect the probe after the instrument has fully booted and the input stage has settled.

The SHS800X readings started drifting and then the screen reset mid-logging session — battery looked fine on the indicator.

Sustained sensor load during a long logging session pulls more current than single-shot measurements, and voltage sag under that load can briefly dip below the instrument's minimum operating threshold even when the indicator shows charge remaining. The BMS does not trip — the oscilloscope's internal regulator simply resets when supply voltage drops too low. Charge the pack to full before any extended logging session, and confirm resting voltage is at or above 8.0V on the pack terminals before you start.

This battery won't take a charge after the SHS800X sat in storage — charger shows no activity at all.

Self-discharge over several months has likely dropped the cell voltage below the BMS wake-up threshold, putting the pack in deep-sleep lockout. Most chargers won't detect a pack in this state and show no activity. Connect the pack to a charger that supports a low-current recovery or pre-charge mode — typically 0.1C or below — and leave it for 20 to 30 minutes. Once individual cell voltage recovers above 3.0V, the BMS re-initialises and the charger will begin a normal charge cycle.

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