★★★★★
Power went out for 19 hours during the ice storm last February. Garage door cycled six times — kids to school, two trips to a neighbor — without a hiccup.
Liftmaster
475LM EverCharge Battery Backup
Plug-in battery backup for the Liftmaster Estate Series and Jackshaft openers. When the power goes out — and you still need to get the car out, or get into the house — the 475LM keeps the opener running for up to 20 full open/close cycles. The opener charges the battery automatically in normal use.
$69.95
● In stock — ships next business day
🛟 Free technical support
📄 Installation & FAQ
- ModelLiftmaster 475LM (EverCharge)
- Backup capacityUp to 20 cycles per charge
- Recharge time~24 hours from full discharge
- Battery life3–5 years (typical)
- Compatible openers2500B, 2500D, 3500, 3800 Jackshaft
- Status indicatorLED + opener's wall station
In the box
- Liftmaster 475LM EverCharge battery
- Mounting bracket
- Connection harness
- Installation manual
Compatible openers
If your model isn't listed, send us a photo and we'll verify before you buy.
Liftmaster Estate Series
2500
2500B
2500D
3500
Liftmaster Jackshaft
3800
The 475LM is engineered specifically for the EverCharge connector inside the listed openers. It will not connect to other Liftmaster models without that port. California buyers note: SB-969 (effective July 2019) requires battery backup on residential garage door openers — the 475LM is one approved retrofit.
When you need a battery backup
- You enter the house through the garage and would be locked out during an outage.
- You need to get a car out during a hurricane, ice storm, or grid event.
- You're in California — SB-969 mandates battery backup on residential openers.
- You've replaced the manual emergency release one too many times.
What customers say
★★★★★
Required by California law on my new construction. Installation took twenty minutes. The opener charges it in the background — I genuinely forgot it was there until we lost power.