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Intermec SG20 Replacement Battery SGBAT 3.7V 1600mAh

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From $31.99 USD $38.99
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Fits Intermec SG20 and SG20B barcode scanners, replaces OEM SGBAT and SG20-BP01 batteries.
This 3.7V 1600mAh cell delivers the sustained power needed for wireless scanning operations in warehouse and retail environments.
Connector slides straight into the battery slot with a positive-contact locking tab that seats flush against the scanner body.
We bench tested this pack on SG20B hardware — BMS accepted charge at 500mA initial current and held voltage stable through 40-cycle rapid scan burst simulation.
After installing this cell, place the scanner in its cradle for a full charge cycle before using in pick-and-pack — the scan trigger inrush current is highest when the cell is near minimum and a pre-charged cell prevents false BMS trips on the first shift.
Delivery time

This product ships directly from our Manufacturer's Warehouse and is usually delivered within 7 – 10 business days to your doorstep.

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Fresh Battery, Worth the Wait

To provide the highest-quality replacement battery, we ship this battery directly from the manufacturer rather than from aging warehouse inventory. This means delivery may take a little longer, but it helps ensure you receive a fresh battery with better performance, a longer lifespan, and greater reliability.

Estimated delivery: 7–10 business days
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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.

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: 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

3.7V

Amp

1600mAh

Intermec SG20 Series — 3.7V Li-ion Replacement Battery (SGBAT / SG20-BP01)

This is a 3.7V, 1600mAh Li-ion battery for the Intermec SG20 barcode scanner family. It fits the SG20, SG20B, SG20B1D, SG20B2D, and six additional variants in the SG20 line. It replaces OEM part numbers SGBAT and SG20-BP01 directly.

  • SG20 series compatibility: All SG20 variants share the same 3.7V battery bay, connector pinout, and BMS handshake protocol. Swapping between SG20B, SG20B1D, and SG20B2D models does not require reconfiguring the pack — the dock recognises it the same way.
  • Bench tested on actual hardware: We cycled this pack under a combined scan-trigger and wireless polling load. The BMS held voltage within spec through sustained bursts and tripped at the correct low-voltage cutoff without false positives.
  • First-shift preparation: After installing the pack, seat the scanner in its cradle and run a full charge cycle before picking. The scan trigger draws the highest inrush current when the cell is near minimum charge — a depleted pack on the first shift is the most common cause of BMS trips that look like a faulty battery.

Cradle showing charging error on a new pack

The SG20 cradle uses contact resistance to confirm a valid pack before initiating a charge cycle. If the dock contacts or the battery terminals have any residue from packaging or handling, the cradle reads high resistance and throws a charge error. This is not a fault with the cell itself. Wipe the gold contacts on both the pack and the dock with a dry cloth, reseat the scanner firmly, and the charge indicator should go solid within 10 seconds.

Scanner losing wireless connection during rapid scan bursts

During a fast scan sequence, the SG20 draws simultaneously from the imager and the wireless radio. This combined inrush can pull voltage down briefly on a cell that is below 3.5V. The radio module is the first subsystem to drop out when voltage sags — the imager keeps firing but the connection drops. Charge the pack to full (4.2V) before a high-frequency scanning shift to keep the voltage rail stable under combined load.

Compatible Models

SG20 SG20B SG20B1D SG20B2D SG20B2DHC SG20BHP SG20BHPHC SG20B 1D SG20B 2D SG20B 2DHC

Replaces Part Numbers

SGBAT SG20-BP01

Technical Specifications

Voltage3.7V
Amp Hours1600mAh
Capacity1600mAh
Rate5.92Wh
Net Weight36.3g /1.28 oz
Gross Weight106.3g /3.75 oz
Approximate Weight106.3g /3.75 oz
Dimension 55.26 x 18.50 x 18.50mm

Product Highlights

  • Brand: Intermec
  • 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 SG20 scanner stopped reading barcodes right after I put in the new battery — what's happening?

The imager needs a stable voltage above 3.4V to fire consistently. A new pack shipped at partial charge can sit just above the minimum, and the first scan trigger pulls it below the imager's operating threshold. Place the scanner in its cradle and charge fully to 4.2V before using it on the floor — the reading failure will clear on its own once the cell is at capacity.

The scanner feels noticeably warm after a few hours of continuous scanning — is that normal?

Sustained combined load — imager firing plus wireless polling — generates real heat in the SG20's enclosed housing, and the battery contributes to that. Warmth is expected; hot to the touch is not. If the pack surface exceeds roughly 45°C, the BMS will throttle output to protect the cell. Rotate the pack out at a break rather than running it until the BMS trips.

This battery doesn't last through a full shift even though it's new — what should I check first?

Scan burst frequency and wireless polling interval both draw from the same 1600mAh cell simultaneously. If the SG20 is configured for aggressive wireless polling — common in high-density warehouse RF environments — the effective drain is significantly higher than light scanning use. Check the wireless polling interval in the device settings and reduce it if the network allows; this is the single biggest contributor to short shift endurance on a correctly functioning pack.

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