Head-to-head · Best Garage Door Openers

Chamberlain B4505T Smart Quiet Belt Drive vs Genie 7035-TKV ChainMax 750

Which is the better buy? Side-by-side on rating, price, strengths, and watch-outs — with the published ratings we averaged to get there.

The short answer

Genie 7035-TKV ChainMax 750 comes out ahead by a narrow margin (4.3 vs 4.4). The gap is mostly about Budget-DIY-install buyers with a detached garage, a workshop, or a barn where noise is not a concern but battery backup and chain-drive longevity are. — read the strengths below before deciding.

Ranked #3 in Best Garage Door Openers

Chamberlain B4505T Smart Quiet Belt Drive

4.3

$229

The Chamberlain B4505T is the smart-but-affordable belt drive most buyers should consider first. It delivers the same Wi-Fi, myQ, and lifetime motor warranty as the premium Secure View at roughly two-thirds the price by dropping the camera, the integrated LED bar, and the battery backup. For attached garages outside California where those features are nice-to-have rather than mandatory, the B4505T is the best value belt opener on the market.

Strengths

— Quiet 3/4 HP DC motor and steel-reinforced belt drive — well suited to attached garages
— Built-in Wi-Fi and full myQ app support at a sub-$250 price
— Security+ 2.0 rolling-code encryption (100 billion-code key space)

Watch-outs

— No integrated battery backup — California buyers will need the B4505T-B or a different SKU
— Light sockets are unpopulated; bulbs are sold separately
— myQ requires a subscription for camera-add-on and scheduling features

$229 · Buy at chamberlain.com Full review →

Higher ratedRanked #4 in Best Garage Door Openers

Genie 7035-TKV ChainMax 750

4.4

$209

The Genie 7035-TKV ChainMax 750 is the chain-drive opener that punches above its weight class. The 3/4 HPc DC motor handles heavier sectional doors than competing 1/2 HP chain units, the included 24V battery backup is rare at this price, and the snap-together tube rail makes self-install fast. The trade is noise — even Genie's well-engineered chain runs louder than a belt — and Wi-Fi is an add-on rather than built in.

Strengths

— 3/4 HPc DC chain drive lifts heavier-than-average doors up to 500 lbs
— Integrated 24V battery backup provides up to 50 cycles after a power loss
— Snap-together 5-piece tube rail installs without special hardware

Watch-outs

— Chain drive is louder than a belt — not ideal directly under a bedroom
— Wi-Fi requires the optional Aladdin Connect bridge (not built in)
— 7 ft standard rail; 8 ft requires the separately sold extension kit

$209 · Check Price on Amazon Full review →

How they stack up

Chamberlain B4505T Smart Quiet Belt Drive

The B4505T is essentially the Chamberlain B6753T minus the camera, the 2,000-lumen LED bar, and the integrated battery backup — at roughly $120 less. Buyers who don't need those upgrades save real money. Buyers in California or other battery-backup states should step up to the B6753T or pick the Genie 7035-TKV chain drive, which includes a 24V backup at this price.

Genie 7035-TKV ChainMax 750

The Genie 7035-TKV is meaningfully louder than the Chamberlain B4505T belt drive, but it includes a battery backup the B4505T omits and costs about $20 less. For detached or unattached garages where noise doesn't matter, the 7035-TKV is the better-equipped pick. For attached garages, the B4505T is the smarter call. Both the Chamberlain B6753T and LiftMaster 98022 cost roughly 50-200% more and deliver smart features and lifting capacity the 7035-TKV doesn't try to match.

Specs side-by-side

Spec	Chamberlain B4505T Smart Quiet Belt Drive	Genie 7035-TKV ChainMax 750
Drive Type	Belt drive (steel-reinforced)	Chain drive (heavy-duty)
Horsepower	3/4 HP equivalent DC motor	3/4 HPc DC motor
Door Height Compatibility	7 ft standard, 8 ft with extension kit	7 ft standard, 8 ft with extension kit
Smart Connectivity	Built-in Wi-Fi, myQ, Amazon Key compatible	HomeLink and Car2U compatible; Wi-Fi via Aladdin Connect add-on
Battery Backup	No (B4505T-B variant adds it)	Yes (integrated 24V, up to 50 cycles)
Light Output	200W socket capacity (bulbs sold separately)	Two bulb sockets (LED bulbs recommended; 60W max if incandescent)
Security Encryption	Security+ 2.0 (100 billion codes)	—
Warranty	Lifetime motor and belt, 5-year parts	Lifetime motor, 10-year gearbox, 3-year parts
Lifting Capacity	—	Up to 500 lbs

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