EGO ST1511T
#2 in BatteryFull review
A strong 15 in. trimmer for suburban yards, with the easiest line reloading around and a long warranty. Buy it if you already own EGO batteries or want to start on that platform.
Amazon $219$219
The EGO ST1511T is the better string trimmer overall, rated 4.3 to 4.0. The EGO ST1511T leads on value. The EGO ST1623T LINE IQ wins on swath. The EGO ST1511T costs $140 less ($219 vs $359).
EGO ST1623T LINE IQ
#7 in BatteryFull review
The most hands off battery trimmer here: it feeds and reloads line for you and runs about an hour. Worth the premium for big yards and anyone tired of bump heads.
Amazon $359$359
Prices were last checked October 31, 2026 and are subject to change; the price and availability shown by the retailer at the time of purchase apply.
Which should you buy?
- Choose the EGO ST1511T for value ($14.60 per inch of swath ($219 with batteries and charger, 15 in swath) vs $22.44 per inch of swath ($359 with batteries and charger, 16 in swath)).
- Choose the EGO ST1623T LINE IQ for swath (16 in swath vs 15 in swath).
Scores side by side
Each factor is scored 0-100 against the same fixed reference points for every battery string trimmer; a clear win is highlighted. How we rank explains each one.
| Factor weight | EGO ST1511T | EGO ST1623T LINE IQ |
|---|---|---|
| Overall rating | 4.3/5 | 4.0/5 |
| Value 30% | 45 $14.60 per inch of swath ($219 with batteries and charger, 15 in swath) | 6 $22.44 per inch of swath ($359 with batteries and charger, 16 in swath) |
| Line 20% | 100 .095 in line | 100 .095 in line |
| Swath 15% | 80 15 in swath | 100 16 in swath |
| Weight 15% | 90 7.6 lb (without battery) | 92 7.5 lb (without battery) |
| Warranty 20% | 100 5-year warranty | 100 5-year warranty |
Specifications
| EGO ST1511T | EGO ST1623T LINE IQ | |
|---|---|---|
| Cutting | ||
| Cutting swath | 15 in | 16 in |
| Largest line | .095 in | .095 in |
| Line feed | Bump feed | Automatic feed |
| Shaft | Straight | Straight |
| Converts to edger | No | No |
| Takes attachments | No | No |
| Power | ||
| Engine or battery | 56 V, 2.5 Ah of battery | 56 V, 4 Ah of battery |
| Battery energy | 140 Wh | 224 Wh |
| Battery included | Yes | Yes |
| Runtime | 45 min | 60 min |
| Brushless motor | Yes | Yes |
| Variable speed | Yes | Yes |
| Build | ||
| Weight | 7.6 lb (without battery) | 7.5 lb (without battery) |
| Warranty | 5 years | 5 years |
| Battery warranty | 3 years | 3 years |