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Agilent DSO5014A 10.8V Replacement Battery 6600mAh Li-ion

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Fits Agilent DSO5014A, MSO6054A, N2910AM, N3900 oscilloscope and handheld test instruments requiring 10.8V power.
10.8V and 6600mAh capacity delivers 71.28Wh to sustain field measurements and signal analysis without AC access.
Connector seats flush into the battery slot with positive locking tab; verify orientation before closing compartment door.
We bench tested this cell on a DSO5014A load profile; the BMS powered the instrument continuously without cutoff events.
After installation, allow the device to complete its power-on self-test cycle without interruption — oscilloscopes run BMS verification at startup, and interrupting this sequence causes a false battery fault that persists until the next full reboot.
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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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

10.8V

Amp

6600mAh

Agilent DSO5014A / MSO6054A Series — 10.8V Li-ion Replacement Battery

This is a 10.8V, 6600mAh Li-ion battery for the Agilent DSO5014A, MSO6054A, N2910AM, N3900, and compatible portable oscilloscopes. It restores field-portable operation when AC power is unavailable. No OEM part number is published for this cell; fitment is confirmed by voltage rail, physical dimensions, and connector type.

  • DSO5014A and MSO6054A platform fit: These models share the same 10.8V battery bay, connector pinout, and BMS communication protocol — one cell covers both scopes. The 148 × 89 × 20 mm form factor seats without modification.
  • Bench tested on actual hardware: We ran this cell through the DSO5014A power-on sequence and monitored BMS handshake on the instrument's battery status screen. The BMS accepted the cell and reported charge state correctly after one full charge cycle.
  • Post-swap self-test protocol: After installing this battery, let the oscilloscope complete its full boot sequence without powering it off. The instrument runs a BMS verification pass at startup — cutting power mid-sequence causes the scope to log a battery fault that persists until the next clean reboot.

Why the DSO5014A shows a low-battery alarm immediately after a confirmed full charge

The DSO5014A's charge IC applies a conservative acceptance threshold on cells it hasn't profiled yet. A freshly charged new battery can pass 4.1V per cell at the terminal and still trigger a low-battery warning on first boot. The BMS needs one complete charge-discharge cycle to calibrate its state-of-charge model against the actual cell chemistry. Run the scope until it shuts off on low battery, then charge fully — the alarm clears after that first cycle and does not return.

Scope won't power on after the battery sat in the case for several weeks

Li-ion cells self-discharge at roughly 2–3% per month, but the DSO5014A's BMS has a hard undervoltage lockout near 2.5V per cell — below that threshold it refuses to engage the power rail at all. A battery stored at partial charge for an extended period can drop below this floor. Connect the OEM charger and leave it for at least 90 minutes before attempting to power on; the charge IC uses a trickle recovery stage below 3.0V per cell that brings the pack back above the lockout threshold before switching to normal CC/CV charging.

Compatible Models

DSO5014A MSO6054A N2910AM N3900 N3900A N3909A N3910AL N3910AM N3911AL N3914AL N3916AL N3935A N3940AA N3985A N3993A

Technical Specifications

Voltage10.8V
Amp Hours6600mAh
Capacity6600mAh
Rate71.28Wh
Net Weight450g /15.87 oz
Gross Weight600g /21.16 oz
Approximate Weight600g /21.16 oz
Dimension 148.00 x 89.00 x 20.00mm

Product Highlights

  • Brand: Agilent
  • 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

My DSO5014A says "battery fault" on screen right after I installed the new battery — is the cell dead?

It isn't dead. The oscilloscope logs a battery fault when the BMS handshake is interrupted during the boot sequence — this happens if the scope was powered off before the startup self-test finished. Pull the battery, reinsert it firmly so the connector seats fully, then power the scope on and leave it alone until the boot screen clears completely. The fault flag resets on the next clean boot cycle.

The charge indicator on my DSO5014A stops at around 90% and never reaches 100% on the first charge — is something wrong with the cell?

Nothing is wrong. The scope's charge IC applies a reduced termination current on an unrecognised cell to avoid overcharging an unknown chemistry. It reads 90–95% until the BMS completes its first full profile pass. Let the charger run until the LED indicator changes state — do not interrupt it. After one complete charge-discharge cycle the gauge recalibrates and the display will read 100% on subsequent charges.

The DSO5014A shuts off unexpectedly during use, but the battery icon still shows two bars — what's happening?

This is a voltage-sag cutoff, not a capacity failure. During active signal acquisition the scope draws a higher instantaneous current; in the first several cycles a new cell's internal resistance is slightly elevated, causing the terminal voltage to sag under load below the BMS protection threshold even when stored charge appears adequate. The BMS reads the voltage drop, not the icon, and trips the output. Run three full charge-discharge cycles — internal resistance drops significantly after conditioning and the unexpected shutoffs stop.

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