Sun Joe's CJ603E is a 15 amp corded chipper rated for branches up to 1.7 inches. The maker says it chips material to about one twenty-first of its original size, which is a typical figure for this class, and it ships with a collection bag. Marketing stresses quiet operation compared with gas machines, which is a fair point since a corded motor has no engine noise.
The edge of this machine is the brand. Sun Joe has a long catalog of corded tools, so blades, bags and cords are easier to find than for an anonymous import. Compared with the Yeryork it has a slightly lower capacity (1.7 versus 1.8 inches) and fewer features, but support is clearer. Against the Earthwise it is a similar machine at a similar rating.
The classic cautions apply: feed seasoned wood, use a 12-gauge cord and clear the discharge chute between loads. Keep the blade sharp and flip it when chips turn stringy. After a season, expect to replace the bag or its clips before the motor shows any wear, so buy a spare bag if the brand sells one. Keep the hopper clear of vines, which wrap the blades faster than any stick.
What works
- Established brand with parts network
- Quiet, no fuel or fumes
- Collection bag included
- About 21:1 volume reduction
Watch out for
- 1.7 in limit is slightly lower
- Fewer blade features than newer rivals
- Not for thick limbs
Spec sheet
- Motor
- 15A corded
- Capacity
- 1.7 in diameter
- Reduction
- About 21:1
- Bag
- Collection bag included
- Operation
- Quiet, no fumes





