PEOPLENET Trimble MS5 Compatible Battery 7.4V 4200mAh
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PEOPLENET Trimble MS5 Compatible Battery 7.4V 4200mAh - is backordered and will ship as soon as it is back in stock.
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Battery Care Tips
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
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.
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Disclaimer
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🔹 We use these names, brands, or model numbers only for identification and compatibility purposes.
PEOPLENET Trimble MS5 Compatible Battery 7.4V 4200mAh - is backordered and will ship as soon as it is back in stock.
Voltage
7.4V
Amp
4200mAh
PEOPLENET Trimble MS5 / MS5N — 7.4V Li-Polymer Replacement Battery (MS5760)
This is a 7.4V 4200mAh Li-Polymer replacement battery for the Trimble MS5 and MS5N handheld data collectors. These are rugged field devices used in surveying, construction, and GIS work. The OEM part number is MS5760, and this cell matches the original voltage rail, connector pinout, and BMS communication expected by the MS5 platform.
- MS5 and MS5N compatibility: Both models share the same battery bay geometry, 7.4V nominal voltage rail, and BMS handshake protocol — one cell fits both. The MS5N is the camera-equipped variant but draws from the same battery architecture.
- Bench tested on actual hardware: We ran this cell through charge acceptance and BMS communication checks on the MS5 platform. The protection circuit responded correctly to full-charge termination and low-voltage cutoff without triggering fault states.
- Fuel gauge recalibration after swap: After fitting this battery, run one full discharge to automatic shutoff, then charge uninterrupted to 100%. This forces the MS5's fuel gauge IC to calibrate against the new cell and eliminates the inaccurate percentage readings that commonly appear after a battery swap.
Why the Trimble MS5 shuts down at 15–25% after a battery replacement
The MS5 fuel gauge IC retains calibration data from the previous cell. When a new cell is installed, the IC maps voltage curves from the old battery onto the new one, and the two curves don't align. Under combined GPS, display, and wireless load, the new cell's actual voltage drops faster than the IC expects in that range. The device interprets this as a critical low-battery condition and triggers shutdown — even though usable capacity remains. One full discharge-to-shutoff followed by an uninterrupted charge to 100% resets the calibration and resolves the early cutoff.
Trimble MS5 reporting 40% battery the moment a new cell is installed
This happens because the MS5's battery management system reads open-circuit voltage at startup and maps it to a state-of-charge estimate using its stored calibration table. A new Li-Polymer cell shipped at storage charge — typically around 3.85V per cell — lands mid-table, so the device displays a mid-range percentage instead of 100%. The cell is not faulty. Charge the battery fully to 4.2V per cell (8.4V pack) without interruption, then allow one complete discharge cycle, and the fuel gauge will re-anchor to the correct endpoints.
Compatible Models
Replaces Part Numbers
Technical Specifications
Product Highlights
- Brand: PEOPLENET
- Manufacturer: CS
- Series: Standard
- Color: Black
- Product Type: Li-Polymer
- Battery Type: Li-Polymer
- Warranty: 12 Months
- Bulk Orders: sales@batteryweb.com
Frequently Asked Questions
The Trimble MS5 shows a different battery percentage every time I restart it — is the new cell defective?
The cell is almost certainly fine. The MS5 fuel gauge IC reads open-circuit voltage at each boot and estimates charge level from a calibration table built around the old battery. Until the IC learns the new cell's voltage-to-capacity curve, percentage readings will be inconsistent across reboots. Run one full discharge to automatic shutoff, then charge uninterrupted to 100% — that single cycle re-anchors the fuel gauge and stabilises the readout.
Fast charging stopped working on my MS5 after I swapped the battery — the device is charging much slower than before.
The MS5 charge IC negotiates charge rate during the first accepted charge cycle on a new cell. Until that cycle completes, the controller defaults to a conservative current to protect an unrecognised cell. This is normal behaviour and not a fault with the replacement battery. Charge the new cell fully from near-empty in one uninterrupted session — after that cycle completes, the charge IC recognises the cell and restores the standard charge rate.
My Trimble MS5 battery percentage drops noticeably faster from 100% down to 80% than it does through the rest of the range — is this normal after a swap?
Yes, and the cause is fuel gauge drift, not accelerated capacity loss. The top portion of the state-of-charge curve is where the mismatch between the old calibration table and the new cell's voltage profile is greatest. The IC over-reports discharge in that window because the new cell's voltage drops slightly faster than the stored curve predicts at high charge states. One complete discharge-to-shutoff followed by a full charge to 8.4V (pack voltage) recalibrates the curve and evens out the percentage drop across the full range.
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