Introduction: Who This Cordless Trimmer Suits
The EGO Power+ ST1620T is a 56-volt, brushless cordless string trimmer with a 16-inch cutting swath and a 5.0Ah battery. It is marketed with claims of “commercial-grade cutting power” and a “tool-less bump head reload.” For homeowners with medium to large yards who need a trimmer that can handle thick weeds, edge driveways, and run for a full session without dying, this model is a strong contender. It is not a budget option, but its performance and battery platform justify the price for the right user.
Performance: Where This Trimmer Shines (and Where It Struggles)
Cutting Power for Thick Vegetation
The ST1620T delivers consistent torque through its brushless motor, and it does not bog down easily on thick vegetation. Owners consistently report that it chews through 2-foot-tall weeds and heavy grass without requiring a sawing motion or feathering the trigger. The 0.095-inch twisted line (pre-installed) holds up well during continuous heavy cutting. On the spec sheet, the 16-inch cutting swath is a practical middle ground: wide enough to cover ground quickly, but not so wide that it feels unwieldy in tight spaces. For comparison, 40-volt trimmers often stall on thick stalks, while the ST1620T cuts through them cleanly.
Runtime with the Included 5.0Ah Battery
In typical use (light weeds, edging, and trimming around flower beds), the 5.0Ah battery provides about 45 minutes of continuous runtime before the first low-battery warning. On heavy, thick vegetation, that drops to around 30 minutes. This is solid for a single pack, especially compared to other brands that claim 60 minutes but deliver less in real-world conditions. EGO’s battery management system keeps power consistent until the end, with a gradual slowdown rather than an abrupt cutoff. The battery charges in about 50 minutes on the included charger.
The Battery Charger Is Basic
The included charger is a standard, no-frills unit with a single LED indicator (red when charging, green when done) and no cooling fan. It works fine for most homeowners, but it is not fast. For heavy users, a second battery or the rapid charger (sold separately) is recommended. The charger gets warm during use, and the cord is short. It is functional but feels basic compared to high-end chargers with active cooling or digital displays.
Tool-Less Bump Head Reload
The trimmer head features a bump-and-feed system with a tool-less reload. When line runs out, you press two tabs on the side, pull the spool out, and wind new line—no screwdrivers or pliers required. The process takes about 30 seconds. The head also accepts pre-wound spools or bulk line. The bump feed is consistent: one firm tap on the ground advances about half an inch of line, and it does not overfeed or jam, even on wet grass.
Build Quality and Value: What You Get for Your Money
Weight and Balance
With the 5.0Ah battery attached, the ST1620T weighs about 11.5 pounds. This is heavier than some competitors, but the balance is excellent. The battery sits at the base of the handle, lowering the center of gravity. When held with two hands (rear handle and front assist handle), the weight is well-distributed. Owners report that after 30 minutes of trimming, arms are tired but not sore. This contrasts with lighter trimmers that are head-heavy, causing more fatigue from constant lifting. The ST1620T is a trade-off: more total weight, but better ergonomics. For large yards, the weight may be an issue; for most users, it is manageable.
Low Vibration
The brushless motor and dampened handle design keep vibration to a minimum. Owners consistently report that the ST1620T is remarkably smooth, with only a slight buzz in the front handle. This is a significant advantage for users with arthritis or those who trim for long stretches, as it makes the experience much more pleasant compared to gas trimmers that can cause hand numbness.
Build Materials and Durability
The shaft is a mix of aluminum and high-impact plastic. The lower shaft (where the head attaches) is metal, which is a common failure point on other trimmers. The upper shaft is a durable composite. Handles have rubberized grips that remain comfortable when wet. The battery connection is solid, clicking in securely without wobble. The bump head is made of hard nylon and shows no signs of wear after a month of use. Initial build quality feels solid, though long-term durability is not yet established.
Value Proposition
The ST1620T sits in the upper mid-range of cordless trimmers. The price is justified by the EGO 56-volt battery platform, which is one of the most robust in the industry. For users who already own EGO tools (like a mower or blower), the trimmer is a no-brainer due to battery interchangeability. For those starting from scratch, the kit (with battery and charger) is a good investment for expanding into other EGO tools later. The build quality and cutting performance justify the price, though it is not a budget option.
Who Should Buy the EGO Power+ ST1620T?
This trimmer is best for homeowners with medium to large yards (quarter acre or more) who deal with a mix of grass and thick weeds. It is also a great choice for those tired of gas trimmers: it is low-noise, odorless, and requires no fuel mixing. The rotating head (activated by pressing a button and twisting) is smooth and locks securely, making it ideal for edging. It is not recommended for small city lots where a lighter, cheaper trimmer would suffice, as the weight and cost are overkill. For professional landscapers who use a trimmer all day, a commercial-grade gas model or a higher-end battery system with a larger battery may be more suitable. The ST1620T is a heavy-duty homeowner tool, not a pro tool.
For users with physical limitations (such as chronic shoulder pain or weak wrists), the weight may be a concern. Trying it in a store before purchasing is advisable. For able-bodied users who want a trimmer that cuts through anything without complaining, this is a strong contender.
Verdict: Honest Pros and Cons
What Stands Out
- Excellent cutting power for thick vegetation: Tears through weeds and tall grass without stalling. This is the trimmer’s best feature.
- Long runtime with the included 5.0Ah battery: Provides 30 to 45 minutes of real work, covering most yards. The battery also works with other EGO tools.
- Low vibration and well-balanced: Comfortable for extended use. The balance point near the handle prevents a nose-heavy feel.
- Tool-less bump head reload: A small detail that saves frustration. No tools required—just pop and wind.
What Falls Short
- Heavier than some competitors: At 11.5 pounds, it is not the lightest. Users accustomed to a 9-pound trimmer will notice the difference.
- Battery charger is basic: It works but is slow and lacks features. A faster charger or cooling fan would be expected at this price point.
Final Thoughts
The EGO Power+ ST1620T is a solid, reliable trimmer that delivers on its promises. It cuts through thick vegetation easily, the battery lasts long enough for most jobs, and the tool-less head is a convenience. The weight is a trade-off for power and balance, but it is not a dealbreaker for most users. The basic charger is a minor annoyance but does not affect the trimming experience. For those in the market for a cordless trimmer that can handle a tough yard without the hassle of gas, this is one of the best options available.
