“The lithium upgrade made a huge difference to my golf cart. Longer runtime, quicker charging and noticeably better performance.”
Samlex America
Samlex SEC-2440UL 24V 40A Battery Charger - 2-Bank, 3-Stage, AGM/Gel/Flooded, DIP Switch, Temp Sensor Included
Samlex SEC-2440UL 24V 40A Battery Charger - 2-Bank, 3-Stage, AGM/Gel/Flooded, DIP Switch, Temp Sensor Included
- Regular price
- Price: $805.60
- Regular price
- List Price: $0.00
- Sale price
- Price: $805.60
- Unit price
- / per
Notify me when this product is available:
Couldn't load pickup availability
PRODUCT DESCRIPTION
Samlex SEC-2440UL 24V 40A Battery Charger – 2-Bank, 3-Stage with Temperature Sensor
The Samlex SEC-2440UL is a fully automatic three-stage 40 A battery charger for all types of 24 V lead-acid batteries, including Flooded, AGM (Absorbed Glass Mat) and Gel Cell. It runs from a 120 V, 60 Hz or 230 V, 50 Hz AC source and can charge up to two separate battery banks at the same time, with no isolator needed.
Charges All Lead-Acid Battery Types
Automatic operation takes the guesswork out of charging Flooded, AGM and Gel Cell batteries. A DIP switch lets you choose a 2-stage or 3-stage algorithm for rapid, safe charging of both standalone and loaded batteries. The 2-stage setting suits batteries connected to a DC load (DC UPS).
Two Battery Banks, Plus Power Supply Use
Charge two battery banks simultaneously. When used with a battery, the unit can also serve as a DC power supply or DC UPS.
Smart Charging Features
- Half Power Mode reduces maximum charging current to half the rated capacity for safe charging of lower capacity batteries
- Included temperature sensor helps prevent undercharging and overcharging when temperatures vary widely
- Built-in voltmeter and ammeter for easy monitoring
- User configurable AC input: 120 or 230 VAC, 50/60 Hz
- Fan cooling based on output current
Efficient and Protected
Switch mode technology delivers high efficiency, light weight and quiet operation. Protections include short circuit, overload, reverse battery connection and over temperature.
Common Applications
Automotive, recreational vehicles, marine, communications sites and battery back-up systems.
Specifications
- Brand: Samlex America
- Model: SEC-2440UL
- Manufacturer Part No: SEC-2440UL
- UPC: 622988083075
- Input: 120 VAC or 230 VAC, 50/60 Hz
- Output: 24 VDC, 40 A
- Battery Banks: 2
- Charging Stages: 3-stage (2-stage selectable by DIP switch)
- Battery Types: Flooded, AGM, Gel Cell
- Remote Control: 900-RC
- Weight: 9 lbs (4.1 kg)
- Dimensions: 15 x 9.61 x 3.82 in (381 x 244 x 97 mm)
- Safety: Listed to UL 1564, EMI compliant to FCC Part 15(B) Class B
- Warranty: 2 year limited
WARNING: This product can expose you to chemicals which are known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to P65Warnings.ca.gov.

Customer Service Testimonials
See why customers choose us for dependable lithium power, premium brands and knowledgeable support.
“I was unsure which battery setup would work with my cart, but the support was excellent and helped me choose the right option.”
“Shipping was quick and everything arrived well packed. Installation was straightforward and the battery has been performing great.”
“Much lighter than my old lead-acid setup and I no longer have to worry about constant maintenance. Very happy with the upgrade.”
“Great selection of quality brands and the website made it easy to compare the options for my 48V golf cart.”
“The new battery gives us plenty of range for a full day around the community. Power delivery stays strong even near the end of the charge.”
“Helpful service, clear product information and a smooth ordering process. I would definitely shop here again for golf cart upgrades.”