Quick verdict
A 15-inch battery string trimmer with EGO's push-button Powerload head, a telescoping aluminum shaft, two speed settings and a 2.5 Ah pack with charger included. It suits a quarter-acre to half-acre lot with fence lines, beds and a mailbox post to trim weekly. The caveat is the small pack: EGO rates it for up to 45 minutes, and thick weeds on the high speed setting will use that up faster.
Strengths
- Powerload head winds new line at the press of a button
- Thick 0.095-inch line lasts longer on fences and concrete
- Telescopic aluminum shaft sets the length to the user
- Two speed settings plus a variable trigger
- 2.5 Ah pack and CH2100 charger included, 50-minute charge
- Pack runs every other EGO 56V tool
Weaknesses
- 2.5 Ah pack limits heavy work to about half an hour
- Tool weight and motor type are not stated in the listing
- No shoulder strap in the kit
- 15-inch swath is slow on a large lot
The overall YardToolLab Score is out of 100. Section scores are out of 10.
Who this trimmer is for
A quarter-acre lot with a fence line, a few beds and a mailbox post does not need a commercial trimmer, but it does need one that starts every time and does not bog down in spring growth. The EGO Power+ ST1511T is the entry point to EGO’s 56V line: a 15-inch cutting swath, a telescoping aluminum shaft, the Powerload line head and a 2.5 Ah battery with charger in the box. It is aimed at the homeowner who wants a battery trimmer that behaves like a serious tool without the weight or the fuel can.
This review is based on the maker’s published specifications and on recurring owner feedback. We have not run this product ourselves.
What you get
The kit holds the trimmer, a 2.5 Ah 56V battery and the CH2100 charger. EGO states a 15-inch cutting swath, 0.095-inch professional-grade line, two speed settings and a variable-speed trigger. The shaft is aluminum and telescopes, so a tall user can lengthen it and a shorter one can bring the head in closer. The listing does not state the tool weight or whether the motor is brushless, so treat both as unconfirmed until you read the spec sheet on EGO’s site.
Cutting and the Powerload head
The feature that sells this trimmer is the Powerload head. Instead of pulling the spool apart, you feed a length of line through the head, press a button and the head winds it for you. Owners consistently name this as the reason they stopped dreading line changes, and it is a real advantage over bump heads that need to be opened and rewound by hand. The 0.095-inch line is thicker than the 0.065 and 0.080 line found on most light battery trimmers, which means it lasts longer against fences and concrete and cuts tougher stems without shredding. On the lower speed setting the 15-inch swath handles weekly grass trimming; the higher setting is for thicker weeds along a ditch or a neglected fence line.
Runtime and charging
EGO rates the included 2.5 Ah pack for up to 45 minutes on a single charge. That figure assumes the low speed setting and light grass; running the high speed through thick weeds shortens it, and owners report closer to half an hour in heavy work. For most quarter-acre lots that is still a full trim with margin. The CH2100 charger refills the 2.5 Ah pack in about 50 minutes per EGO, so a second pass is possible after a short break. The pack also runs every other EGO 56V tool, which turns this trimmer into a doorway to the mowers, blowers and chainsaws if you add them later.
Build, handling and ergonomics
The telescopic aluminum shaft is the ergonomic story here: lock it at the length that lets you stand upright and the trimmer stops being a back strain. Owners praise the balance with the 2.5 Ah pack fitted; a larger 5.0 Ah pack adds weight at the rear and changes the feel. The two speed settings are chosen with a switch, and the trigger is variable within each setting, so you can feather the head around a flower bed and open it up on the fence line. There is no shoulder strap in the listing, which is normal for a trimmer of this size.
Living with it
Buy a spool of 0.095 twisted line and keep it with the trimmer; Powerload makes reloading quick, but it still needs line. Clean grass off the head and guard after wet work so the guard does not pack solid. Store the battery indoors and take it off the charger once it is full. EGO publishes a warranty for its tools and batteries; the exact terms for this kit are on the product page and should be read, since battery coverage is typically shorter than tool coverage.
Alternatives to Consider
The EGO Power+ ST1521S is the step up, with a Powerload head on a carbon-fiber shaft and a bigger pack, for larger lots and thicker growth. The Greenworks 80V 16-inch trimmer offers a similar battery-to-tool ratio and suits anyone already on Greenworks packs. For a tiny yard with a few edges, a Ryobi 18V ONE+ 13-inch trimmer is lighter and cheaper, with thinner line and shorter runtime to match.
Verdict
Buy the EGO Power+ ST1511T if you want a 15-inch battery trimmer with a line head that reloads in seconds, an adjustable-length shaft and a pack that opens up the whole 56V range. Skip it if your lot is well over half an acre or your main job is thick brush, where the 2.5 Ah pack and 15-inch swath will leave you wanting the bigger EGO or a gas machine.
Full specifications
EGO Power+ 15-Inch Cordless String Trimmer ST1511T with 2.5 Ah Battery and Charger FAQs
Yes. The kit includes a 2.5 Ah 56V battery and the CH2100 charger, which EGO says refills that pack in about 50 minutes.
EGO specifies 0.095-inch line. Twisted 0.095 line is the usual choice because it is quieter and holds up better against hard edges than round line.
You feed a length of line through the head until it is centered, press the button on top, and the head winds it onto the spool. There is no spool to pull apart and rewind by hand.
EGO rates the 2.5 Ah pack for up to 45 minutes. That assumes light grass on the lower speed; owners report closer to 30 minutes when running the high speed through thick weeds.
