The Quick Verdict
Get the Bag Boy Volt. It lists at $399.05 less than the MGI Ai Navigator GPS+, covers the same 36-hole range on its battery, and converts to a manual push cart if you ever want to ditch the motor. The MGI is worth the extra money if built-in GPS matters to you — a 4-inch touchscreen with 40,000 courses loaded is a real feature that Bag Boy doesn't list for the Volt — or if a 3-year warranty versus a 1-year one changes the calculus for you. Check price at Amazon →
What They Have in Common
Both are remote-control electric caddies running on 24V lithium batteries tied to a 36-hole figure: Bag Boy rates the Volt for up to 36 holes, while MGI's "up to 36 holes" sits on its comparison chart rather than the product page, which states only the battery's name, "24V 380Wh 36 Hole Lithium Battery". Both include an umbrella holder and cup holder. Both have remote control and fold for the trunk. They're competing for the same parking spot in your garage, at meaningfully different prices.
Where They Differ
Price and warranty
The Volt lists at $1,495.95. The Navigator GPS+ lists at $1,895. That's a $399.05 gap at list. What you get for it: GPS, a larger wheel count, and a longer warranty. The MGI carries a 3-year manufacturer's warranty; the Volt covers you for 1 year. On a cart you're expecting to own for a decade, that gap is worth at least a line item in your thinking.
GPS — the biggest functional difference
The MGI has a 4-inch touchscreen GPS loaded with 40,000 courses. Bag Boy lists no GPS or screen for the Volt. If you currently carry a GPS watch or rangefinder and you're fine with it, that costs you nothing. If you'd rather leave the watch home and have yardages on the cart itself, the MGI is the only one of these two that lists it.
Remote and wheels
Both carts are remote-controlled, but they describe their remotes differently. The Volt advertises nine speed levels, a predetermined-distance mode (5–30 yards), and a course-correction feature called Trueline. The MGI says its remote is full-directional with a range of over 110 yards and uses a gyroscope for straight tracking. MGI lists twin 230 W motors for the Navigator GPS+ — on its comparison chart rather than the product page — while Bag Boy states no motor power for the Volt, so there's nothing to compare on raw drive. The MGI runs on five wheels; the Volt on three, with an extendable fourth wheel in the feature list. What the extra wheels do on the course, neither spec sheet says. MGI does publish a swivelling front wheel, downhill speed control and an electronic park brake for the Navigator GPS+ — the last two on its comparison chart rather than the product page — and Bag Boy lists none of those for the Volt.
Folded size and weight
The Volt folds to 29 × 16.5 × 14.5 inches. The MGI folds to 24.4 × 18.11 × 15.35 inches. By volume they're nearly identical — 4.0 cubic feet versus 3.9 — but the longest dimension tells a more useful story: the Volt's 29-inch length versus the MGI's 24.4 inches. If your trunk is short on length, that 4.6-inch difference is the one to measure; on the other two sides the Volt is the slimmer one, 16.5 × 14.5 inches against 18.11 × 15.35.
On weight: the Volt lists 29.9 lbs, but Bag Boy doesn't say whether that includes the battery. The MGI lists 33.29 lbs without the battery and 38.99 lbs with it. Because the two figures don't measure the same thing, there's no honest comparison to make here. What is true is that 38.99 lbs with the battery is what you're lifting into the trunk on the MGI side.
What's in the box
The Volt includes an umbrella holder, cup holder, and storage console, plus Top-Lok bag attachment. The MGI includes umbrella, drink, and phone holders — MGI calls out accessories included — but doesn't publish a storage console. MGI holds the bag with an adjustable upper bag support with straps and a lower bag strap. MGI lists no seat included, and Bag Boy doesn't mention one for the Volt.
Who Should Buy Which
Get the Bag Boy Volt if:
- You already carry a rangefinder or GPS watch and don't need a second screen
- The $399.05 gap at list matters to you
- You like the option to push manually on days you forget to charge it
- A 1-year warranty is enough cover for you
Get the MGI Ai Navigator GPS+ if:
- You want course yardages on the cart itself, without pulling something out of your pocket
- The 3-year warranty changes your comfort level on a $1,900 purchase
- Your trunk is tight on length — the MGI's longest folded side is 24.4 inches against the Volt's 29
- You want MGI's five-wheel design and gyroscope straight tracker
The Bottom Line
For most golfers walking with a remote caddy, the Volt does the job at $399 less at list, is rated for up to 36 holes, converts to a push cart, and comes with everything you need in the box. The GPS on the MGI is a real feature, not a marketing bullet — 40,000 courses on a 4-inch touchscreen is useful if that's something you'd actually use. The warranty gap is real too. But those are specific needs, and the Volt is the default for buyers who don't have them.