CHC X91 GNSS Receiver Compatible Battery 7.4V 2000mAh Li-ion
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CHC X91 GNSS Receiver Compatible Battery 7.4V 2000mAh Li-ion - is backordered and will ship as soon as it is back in stock.
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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.
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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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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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CHC X91 GNSS Receiver Compatible Battery 7.4V 2000mAh Li-ion - is backordered and will ship as soon as it is back in stock.
Voltage
7.4V
Amp
2000mAh
CHC X91 / X93 / X900 GNSS Receiver — 7.4V Li-ion Replacement Battery (1906110059)
This 7.4V 2000mAh Li-ion pack replaces OEM part 1906110059 in CHC X91, X93, and X900 GNSS receivers. These are field survey instruments used in geodetic and construction work. Capacity is 14.8Wh — same as the original cell configuration.
- X91, X93, and X900 compatibility: All three models share the same battery bay geometry, 7.4V nominal rail, and BMS handshake protocol. The connector pinout and cell voltage thresholds are identical across the series, so one pack covers all three.
- Bench tested on actual hardware: We cycled this pack through the X91's power-up sequence and satellite acquisition load. The BMS held steady through the initial current draw at receiver boot and during active tracking. No cutoff events were logged under normal field load.
- Post-install calibration before field use: After fitting this pack, run a full calibration cycle through the instrument's system menu before heading out. The X91 maps battery state during calibration — skipping this step causes the low-battery indicator to trigger early on the first field session, even with a full charge.
BMS lockout after the X91 sat unused in a carry case for months
Li-ion cells self-discharge during storage. If the pack drops below the BMS protection threshold — typically around 2.5V per cell — the BMS latches into a sleep state and the instrument won't power on at all. The receiver shows nothing, not even a low-battery warning. To recover, connect the pack to a charger that supports a pre-charge or trickle mode; a standard fast charger may refuse to start. Hold the pack on trickle until cell voltage climbs above 3.0V per cell, then switch to normal charge.
Readings drifting or logging session resetting mid-survey
This happens when sustained sensor and satellite-tracking load pulls cell voltage into a sag that the instrument interprets as a low-battery event, triggering a soft reset. It is not a full shutdown — the receiver reboots and the active logging session is lost. A degraded original pack masks this because its resting voltage looks fine but collapses under load. Swap to a fresh pack and confirm resting voltage reads at least 7.2V before starting a logging session.
Compatible Models
Replaces Part Numbers
Technical Specifications
Product Highlights
- Brand: CHC
- 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 CHC X91 powers on fine but shuts itself down the moment I start a USB data transfer to the PC — why?
USB data transfer adds a second load on top of the active receiver circuitry, and together they pull more current than a weakened or partially discharged pack can sustain without voltage sagging below the BMS cutoff threshold. The BMS reads the combined draw as an unsafe event and disconnects. We saw this behaviour on the bench with a pack below 7.0V resting voltage — a fresh, fully charged pack held stable through the entire transfer. Charge the battery to full before any USB transfer session.
The X91 sat in the equipment store for four months and now the charger light just blinks and never starts a charge cycle — is the pack dead?
Not necessarily. After months of storage, cell voltage likely dropped below the charger's minimum acceptance threshold, and the charger is refusing to engage rather than attempting a recovery charge. Use a charger with a manual trickle or recovery mode to bring each cell back above 3.0V before switching to a normal charge cycle. If the pack accepts trickle current and voltage climbs steadily, the BMS is recovering from sleep state — the pack is not failed.
My X91 shows a full battery on the display at startup but throws a low-battery warning and stops logging after only a short time in the field — what is going on?
The instrument's battery percentage indicator is calibrated to the voltage curve of the original cells. A new pack, or one that has not yet been cycled through the instrument, sits on a slightly different voltage curve at rest, so the display reads optimistically high at boot. Under field load — satellite tracking plus data logging — voltage drops faster than the indicator expects, and the low-battery threshold triggers early. Run one full calibration cycle through the system menu after installing the new pack; the instrument re-maps the threshold to the actual cell curve and the warnings normalise.
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