Quick verdict
A brushless 15 inch string trimmer on EGO's 56V platform with a Rapid Reload head for loading new line, professional-grade 0.095 inch line, variable speed, and a 2.5 Ah battery that EGO rates for up to 45 minutes and charges in 50 minutes on the included CH2100 charger. It suits a homeowner starting on EGO batteries with a quarter to half-acre of edges. The caveat is that the 2.5 Ah pack is the smallest in the range, so a mower-sized lot will want a bigger battery.
Strengths
- Brushless motor with low vibration
- 15 inch swath with 0.095 inch line, heavier than most consumer trimmers
- Rapid Reload head loads new line without opening the spool
- Variable speed trigger
- 2.5 Ah battery charges in 50 minutes on the included charger
- Battery runs the full EGO 56V tool range
Weaknesses
- 2.5 Ah is the entry pack and runtime drops fast in heavy growth
- Weight and shaft type are not stated in the listing
- Not attachment capable
- Heavier 0.095 line draws more power than 0.080
The overall YardToolLab Score is out of 100. Section scores are out of 10.
Who this trimmer is for
The EGO POWER+ ST1502SA is the trimmer EGO sells to people who have not bought into a battery platform yet. It bundles a brushless 15 inch trimmer with a 2.5 Ah 56V pack and a fast charger, and the pack then runs every other EGO tool. The Rapid Reload head fixes the chore that makes people hate string trimmers, and the 0.095 inch line is the size landscapers run. It suits a quarter to half-acre lot with fences, beds and a curb to edge.
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 contains the trimmer, a 2.5 Ah battery and the CH2100 charger. EGO lists a 15 inch cutting swath, professional-grade 0.095 inch line, the Rapid Reload head, a variable speed control, up to 45 minutes of runtime on the included pack, a 50 minute charge time, and a high-efficiency brushless motor described as low vibration and long-lived. The listing does not state the weight, the shaft type or whether the head is bump feed; EGO’s 15 inch trimmers of this generation typically use a straight shaft and a bump head, but confirm on the product page.
Cutting power
A brushless motor on EGO’s 56V platform driving 0.095 inch line is a different class from the light 20V trimmers with 0.065 line. The heavier line cuts thick lawn edges and weedy fence lines cleanly and lasts longer before it needs feeding; the trade is that it draws more power per pass. Owners of this trimmer generally describe it as the point where a battery trimmer stops feeling like a compromise against gas for residential work, with the usual note that a 15 inch head on a 2.5 Ah pack is sized for lawns rather than fields. The variable speed trigger lets the operator run low along beds and full on the fence line, which stretches the battery.
Runtime and charging
EGO rates the 2.5 Ah pack at up to 45 minutes, which is at moderate speed in normal grass. At full speed in tall growth expect well under that. The redeeming feature is the 50 minute charge on the CH2100, so for most lots the battery is full again before the next job. The 2.5 Ah is the smallest EGO pack, and buyers who later add an EGO mower or blower will want a 5.0 Ah or larger battery; the trimmer will run on any of them. That upgrade path is the real value of starting on this kit.
Head, build and handling
Rapid Reload is the feature owners talk about most: feed line through the head, line up the marks and twist, without pulling the spool apart. It makes keeping the right line diameter on the trimmer painless, which is why the 0.095 line gets used rather than replaced with whatever is on the shelf. The brushless motor is listed as low vibration, and owners confirm the trimmer is smooth over a long session. Weight is not stated. The shaft does not split for attachments, so this is a trimmer only, not a multi-tool power head.
Living with it
Keep a reel of 0.095 line in the garage, clear grass from the guard after each use, and store the pack indoors at partial charge over winter. The CH2100 charger is included. EGO publishes separate warranty periods for the tool and the battery on the product page, and both should be read before purchase. Spare Rapid Reload heads and guards are available through EGO’s dealer network, which includes Lowe’s.
Alternatives to Consider
The EGO POWER+ ST1521S Powerload 15 inch trimmer is the step up within the brand, with a motorized line-loading head and a carbon fiber shaft. The Ryobi ONE+ HP 18V Whisper Series 15 inch trimmer is the quieter, attachment-capable rival for anyone already on Ryobi batteries. For a bigger lot on a budget, the Greenworks 40V 14 inch trimmer kit costs less and runs on a widely available platform.
Verdict
Buy the EGO POWER+ ST1502SA if you want a serious 15 inch trimmer with pro-grade line, a head that reloads in a minute, and a battery that starts you on the EGO platform; the brushless motor and 50 minute charge make the small pack livable on a typical lot. Skip it if you need attachments on one power head, or if the property is large enough that a 2.5 Ah battery will have you waiting on the charger every session.
Full specifications
EGO POWER+ ST1502SA 15-Inch Cordless String Trimmer with 2.5 Ah Battery and Charger FAQs
You feed a length of line through the head, align the arrows and twist the head to wind it on, without removing the spool. It is quicker than the open-spool method and is the feature owners mention most.
EGO rates up to 45 minutes on the 2.5 Ah pack at moderate speed. For weekly edging on a quarter-acre that is ample; for tall grass at full speed expect noticeably less, and a 5.0 Ah pack roughly doubles the time.
It is the diameter landscapers use. It cuts thicker stems and lasts longer than the 0.065 or 0.080 line on lighter trimmers, at the cost of a little more power draw per pass.
Yes. The 56V pack runs EGO mowers, blowers, chainsaws and hedge trimmers, so this kit is a sensible first step onto the platform even though the 2.5 Ah pack is small for a mower.
