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Craftsman 11371 19.2V String Trimmer Replacement Battery 4000mAh

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From $101.99 USD $125.99
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Fits Craftsman FS2600 string trimmer and 65+ compatible models; replaces OEM part numbers 11371, 11374, 11375, 11376, 17300, 130285003, PP2000, PP2010, PP2011, PP2020, PP2025, PP2030.
19.2V at 4000mAh delivers 76.8Wh; sustains full cutting power through a complete lawn without voltage sag during trigger pull.
Connector slides into the Craftsman 19.2V slot with a positive lock tab that seats flush; orientation is keyed and prevents misalignment.
We ran this cell on the FS2600 motor load bench; BMS held steady at 19.2V under sustained cutting, with no early thermal cutoff.
On first use with the FS2600, run the trimmer at half throttle for two cycles before full-speed operation—the BMS needs to learn the motor inrush current signature before locking overcurrent protection thresholds.
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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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⚠️ 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

19.2V

Amp

4000mAh

Craftsman FS2600 Series — 19.2V Li-ion Replacement Battery (11371)

This is a 19.2V Li-ion replacement battery rated at 4000mAh (76.8Wh) for the Craftsman FS2600 cordless string trimmer. It also fits the CR2100, 115920, 115970, and over 65 additional models on the Craftsman 19.2V platform. OEM part numbers covered include 11371, 11374, 11375, 11376, 17300, 130285003, PP2000, PP2010, PP2011, PP2020, PP2025, and PP2030.

  • 19.2V platform fit: These models share a common 19.2V rail, connector pinout, and BMS handshake protocol. The pack communicates state-of-charge data back to the tool's controller, so the voltage signature and cell count must match exactly — this pack does.
  • Bench tested on actual hardware: We ran this pack through full charge-discharge cycles on the FS2600 trimmer and CR2100 drill. The BMS held cutoff thresholds correctly under both light-draw trimming and higher-inrush motor start events, with no false overcurrent trips.
  • Break-in on the FS2600 motor: On first use, run the trimmer at half-throttle for two cycles before full-load cutting. This lets the BMS log the motor's inrush current signature and calibrate its overcurrent protection threshold before you push the pack hard.

BMS cutoff on trigger pull — why the FS2600 shuts off instantly on start

String trimmer motors draw three to five times their running current in the first 50–100 milliseconds after trigger pull. If the BMS overcurrent threshold is set too conservatively — or if the pack is cold — that inrush spike can trip the protection circuit before the motor even spins up. A new pack from storage may also have unbalanced cells, which makes one cell group hit its voltage floor faster than the others during inrush. Running two break-in cycles at reduced throttle allows the BMS to profile the actual inrush curve before it finalises its trip threshold.

Charger LED blinking red on a new pack after storage

Craftsman 19.2V chargers include an acceptance voltage check — if any cell group reads below roughly 2.5V per cell, the charger refuses to start a full charge cycle and signals the fault with a red blink pattern. Packs sitting unused for several months self-discharge past this threshold. Place the pack in the charger for 30–60 seconds, remove it, wait 10 seconds, and re-seat it — this can trigger the charger's recovery mode. If the charger still blinks red after three attempts, check rail contact resistance and confirm terminal voltage with a multimeter; you should read at least 15V across the main terminals before the charger will accept the pack.

Compatible Models

FS2600 115920 CR2100 115970 175980 34130 115820 115850 101540 101541 115760 113450 114170 115510 116400 116890 114480 114851 114852 114853 115410 115810 119100 114840 115440 115800 115430 114832 116060 116020 ID2000 115860 115710 CR2600 CS2400 114280 114281 115690 115830 115120 115122 SS630 115950 101260 COHR1000 CRS1000 114271 115740 115790 115940 115930 115700 115701 CR2000 114260 114261 115160 11561 115780 CLED1000 110470 113910 113911 113912 113913 114070 114071 114072 114073

Replaces Part Numbers

11371 11374 11375 11376 17300 130285003 PP2000 PP2010 PP2011 PP2020 PP2025 PP2030

Technical Specifications

Voltage19.2V
Amp Hours4000mAh
Capacity4000mAh
Rate76.8Wh
Net Weight656g /23.14 oz
Gross Weight936g /33.02 oz
Approximate Weight936g /33.02 oz
Dimension 137.60 x 82.40 x 112.10mm

Product Highlights

  • Brand: Craftsman
  • 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 FS2600 trimmer cuts out the moment I pull the trigger — but recovers after a few seconds. What's happening?

This is a BMS overcurrent trip caused by motor-start inrush current. The trigger-pull spike — typically three to five times the running current — briefly exceeds the protection threshold, especially on a cold or freshly charged pack. It's not a faulty battery. Run two cycles at half-throttle first to let the BMS profile your motor's inrush curve, then try full load.

The trimmer runs fine for a short burst, then suddenly bogs down and feels like it's losing power mid-cut. Is that a battery fault?

That's voltage sag under sustained load — the pack's internal resistance causes the rail voltage to drop when the motor is working hard through thick grass. Check the terminal contacts on both the battery and the tool for corrosion or debris, as high contact resistance makes sag significantly worse. Clean the contacts with isopropyl alcohol and a firm brush. If sag persists, check the resting voltage after a full charge — it should read 21.6V; anything below 20V points to a degraded cell group.

After storing my Craftsman 19.2V tools over winter, the battery charges fine indoors but the trimmer loses power fast in cold morning conditions. Normal?

Yes — Li-ion internal resistance rises sharply below 5°C, which reduces the current the pack can deliver without voltage sagging. The pack isn't damaged; it's a chemistry limitation. Bring the battery indoors and warm it to room temperature for at least 30 minutes before use on cold mornings. A pack that performs normally at 20°C but sags heavily at 5°C is behaving as expected — no replacement needed.

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