Ryobi 18V ONE+ 13 in Trimmer/Edger
#10 in BatteryFull review
An affordable trimmer and edger for small lawns, best for anyone who already has Ryobi 18V batteries.
RYOBI $136.96$136.96
The Ryobi 18V ONE+ 13 in Trimmer/Edger is the better string trimmer overall, rated 3.7 to 3.1. The Ryobi 18V ONE+ 13 in Trimmer/Edger leads on line, weight and value. The Ryobi 18V ONE+ 13 in Trimmer/Edger costs $22.04 less ($136.96 vs $159).
Black+Decker LST136 40V 13 in
#16 in BatteryFull review
An easy trimmer and edger for small, well kept lawns. Choose a trimmer with heavier line for overgrown lots.
Amazon $159$159
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 Ryobi 18V ONE+ 13 in Trimmer/Edger for line (.080 in line vs .065 in line), weight (6.9 lb vs 9 lb) and value ($10.54 per inch of swath ($136.96 with batteries and charger, 13 in swath) vs $12.23 per inch of swath ($159 with batteries and charger, 13 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 | Ryobi 18V ONE+ 13 in Trimmer/Edger | Black+Decker LST136 40V 13 in |
|---|---|---|
| Overall rating | 3.7/5 | 3.1/5 |
| Value 30% | 75 $10.54 per inch of swath ($136.96 with batteries and charger, 13 in swath) | 61 $12.23 per inch of swath ($159 with batteries and charger, 13 in swath) |
| Line 20% | 50 .080 in line | 0 .065 in line |
| Swath 15% | 40 13 in swath | 40 13 in swath |
| Weight 15% | 100 6.9 lb | 67 9 lb |
| Warranty 20% | 50 3-year warranty | 50 3-year warranty |
Specifications
| Ryobi 18V ONE+ 13 in Trimmer/Edger | Black+Decker LST136 40V 13 in | |
|---|---|---|
| Cutting | ||
| Cutting swath | 13 in | 13 in |
| Largest line | .080 in | .065 in |
| Line feed | Automatic feed | Automatic feed |
| Shaft | Straight | Straight |
| Converts to edger | Yes | Yes |
| Takes attachments | No | No |
| Power | ||
| Engine or battery | 18 V, 4 Ah of battery | 40 V, 2 Ah of battery |
| Battery energy | 72 Wh | 72 Wh |
| Battery included | Yes | Yes |
| Runtime | 55 min | - |
| Variable speed | Yes | Yes |
| Build | ||
| Weight | 6.9 lb | 9 lb |
| Warranty | 3 years | 3 years |