Kobalt KST 1040A-03
The battery and charger add to the kit package; check the current listing for exact contents.
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Brand guide
Kobalt Gen4 40 Volt 15 In Straight Cordless String Trimmer Models
The Gen4 family includes a battery kit and tool-only variants. Compare exact model codes, included battery and charger, and whether the shaft accepts attachments.
Models at a glance
Kobalt KST 1040B-03
You need a compatible battery and charger separately.
Kobalt KMS 1040B-03
This is a separate model family configuration and does not include a battery or charger.
Compare them side by side
| Kobalt KST 1040A-03 | Kobalt KST 1040B-03 | Kobalt KMS 1040B-03 | |
|---|---|---|---|
| Model | Kobalt KST 1040A-03 | Kobalt KST 1040B-03 | Kobalt KMS 1040B-03 |
| Cutting swath | 15 in | 15 in | 15 in |
| Battery and charger | Included | Not included | Not included |
| Shaft | Straight | Straight | Straight; attachment capable |
| Other listed detail | 4.0Ah battery; brushless | Brushless; two speeds | Attachment-capable design |
Sources and how we chose
- Kobalt KST 1040A-03 product listing · 2026-10-23
- Kobalt KST 1040B-03 product listing · 2026-10-23
- Kobalt KMS 1040B-03 product listing · 2026-10-23
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