---
product_id: 135213372
title: "Samlex Solar SEC-1250UL SEC-UL Series 12V Battery Charger,Black"
brand: "samlex america"
price: "$1538"
currency: NZD
in_stock: true
reviews_count: 13
category: "Samlex America"
url: https://www.desertcart.nz/products/135213372-samlex-solar-sec-1250ul-sec-ul-series-12v-battery-charger
store_origin: NZ
region: New Zealand
---

# 15A adjustable current limit RF interference-free silent operation 12V smart battery charging Samlex Solar SEC-1250UL SEC-UL Series 12V Battery Charger,Black

**Brand:** samlex america
**Price:** $1538
**Availability:** ✅ In Stock

## Summary

> 🔋 Power up smartly, stay charged silently.

## Quick Answers

- **What is this?** Samlex Solar SEC-1250UL SEC-UL Series 12V Battery Charger,Black by samlex america
- **How much does it cost?** $1538 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.nz](https://www.desertcart.nz/products/135213372-samlex-solar-sec-1250ul-sec-ul-series-12v-battery-charger)

## Best For

- samlex america enthusiasts

## Why This Product

- Trusted samlex america brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Whisper-Quiet Operation:** Fanless design guarantees zero noise and no RF interference—perfect for sensitive electronics.
- • **Precision Current Limiting:** 15 Amp current limit prevents overloads and ensures safe, reliable power delivery.
- • **Built-In Safety & Monitoring:** Internal fuses and an easy-to-read amp meter keep you informed and protected 24/7.
- • **Smart 12V Battery Management:** Automatically adjusts charging to protect and extend battery life during outages.
- • **Versatile Voltage Compatibility:** Configurable for 120V or 230V AC input to fit your global power needs effortlessly.

## Overview

The Samlex America SEC-1250UL is a robust 12V battery charger designed for professional-grade reliability. Featuring adjustable 15A current limiting, silent fanless operation with zero RF interference, and built-in safety fuses, it ensures your battery bank stays optimally charged during power outages or daily use. Its versatile AC input compatibility and clear amp meter make it a must-have for millennial managers who demand dependable, smart power solutions that blend seamlessly into their tech-savvy lifestyles.

## Description

Great Product

Review: Excellent Adjustable 12V Battery Charger, for Power Outages and Ham Radio. - This review is for a Samlex America Solar SEC-1215UL SEC-UL Series 12V Battery Charger that Ships from and sold by desertcart.com This is a well built Hi Quality Product and well worth the price. I have several other Samlex products and all are working great. This is a current limited power supply that I can use as a float charger for a battery bank that supports power outages and a Ham radio station. The SEC-1215UL will automatically recharge the battery bank after power outages as well as provide the operating power for normal operation. The battery bank is large enough to supply power for internet, computers and lights during the power outages in my area. Many of the parameters in the charger are adjustable and information from Samlex technical support provided some really good information on these adjustments for a special application. The other battery chargers that I have, are either simple chargers or have a lot of RF interference and it is great that this unit is both a smart charger and RF free. No RF interference was observed on any of the ham bands from 160M through 70CM on either my HT, HF radios or the AM or FM broadcast bands. The problem of most Ham power supplies is that while they are RF quite they are only current limited by the smoke that they emit just before failure. Failure can occur when the utility power returns after a power outage that discharged the battery enough to cause it to draw more power than the power supply can safely produce. Adding a fuse and a series diode will protect the power supply but will leave you with a discharged battery after the fuse blows. The SEC-1215UL charger is current limited and will start recharging the battery as soon as the utility power returns. The charger has internal fuses protecting the input and output but there is no ON/OFF switch. The Amp Meter is very useful and it will give an indication of the battery's state of charge. A fully charged AGM battery will draw very little float current. The DC charger output is floating in respect to the AC input and the Case ground to prevent any ground loops. The charger does not have a fan, is absolutely quite and the instructions detail a vertical mounting solution for cooling. No Battery cables are provided but it was easy to make custom cables for my application with the pin type lugs that were provided and some wire & connectors from Lowes. The Charger as shipped, operates from 120 VAC but can be configured for 230 VAC if desired. I plan to purchase, in the near future, a Samlex America Solar SEC-1230UL Battery charger for another project. The SEC-1230UL has the same features except it has a higher output and a cooling fan. The Samlex Solar SEC-1215UL SEC-UL Series 12V Battery Charger ships with an instruction manual filled with very useful information on how to set-up and operate the charger. The charger is a nice looking unit both inside and outside. I gave the unit 5 stars because it is a super replacement for the previous noncurrent limited power supply and the great technical support from Samlex. Update: 09-28-2018 I have added two 3" X 3/4" X 1/8" steel angle brackets to the end of the battery charger that the cables attach. This allows the charger to stand with the meter visible for easy reading. No holes were drilled as the angle brackets already had holes. Two #8 screws were used to attach the angle brackets to existing holes in the charger. The first time I used the charger was to recharge a fully discharged 100AH AGM battery and after several minutes @ 15 Amps the charger warms up quite a bit. The charger changed from boost voltage to float voltage at about 2 amps. If you have more than one fully discharged 100AH battery, it would be better to recharge each one separately. I am very pleased with the Samlex Model SEC-1215UL Battery Charger.
Review: Excellent unit and built well. Worth the extra $$$. - This device is charging your vehicle and your battery. Best to get the better one. The unit is well constructed, comes with gauges, nice heat sink and quality connections.

## Features

- Great Product

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00C5MZU9C |
| Best Sellers Rank | #169,359 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #167 in Solar Battery Chargers & Charging Kits |
| Brand | Samlex America |
| Customer Reviews | 4.1 4.1 out of 5 stars (106) |
| Date First Available | January 1, 2012 |
| Is Discontinued By Manufacturer | No |
| Item Weight | 10.6 pounds |
| Item model number | SEC-1250UL |
| Manufacturer | Samlex America |
| Manufacturer Part Number | SEC-1250UL |
| Model | SEC-1250UL |
| Product Dimensions | 13.03 x 9.6 x 3.82 inches |
| Voltage | 12 Volts |

## Product Details

- **Brand:** Samlex America
- **Color:** Black
- **Item Weight:** 10.6 Pounds
- **Output Voltage:** 12 Volts
- **Product Dimensions:** 9.6"D x 13.03"W x 3.82"H

## Images

![Samlex Solar SEC-1250UL SEC-UL Series 12V Battery Charger,Black - Image 1](https://m.media-amazon.com/images/I/51RKwTYvOIL.jpg)

## Questions & Answers

**Q: Does this charger come with cables to hook the charger to the batteries?**
A: Per the manual, for the 1230UL, the suggested size of the cables depends on the length, as follows:0 to 6 feet --AWG#86-10 feet -- AWG#610-20 feet AWG#4Six feet works for me, so I I ordered these: B003AOC0KG (copy and paste in the Amazon Search Bar to see them).Then I asked an electrician to cut the eyelets of one  end of each and install the PINS that came with the charger onto the bare wires.

**Q: Must i disconnect my solar charge controller when charing from the grid with my sec1230ul?**
A: no you don`t have to disconnect your solar charge control ,in fact the battery `ll get the charge from any charger as long it need a charge .please if you have any questions contact our expert tech line 1-310-864-3131 7 days a week 8 am-6 pm and talk to us .

**Q: Is output current selectable? In other words, regardless of what the charger is doing can I say, select 6amps or some other number to charge batteries at a slower rate?**
A: No.  It uses a charging profile for the type of battery and mode selected (DIP switches).  By mode I mean you can set it to be a power supply, battery charger, or combo power supply / battery charger.  When in the last mode, it doesn't go into the boost phase (highest voltage) at all because it can't tell what current is going into the battery vs going into the load.  If you have a constant load, you'll end up toasting your battery because it will sit at a high voltage for too long.  I believe if you find the manual for one of these, it will describe the various charging profiles in more detail.  I think it starts off with constant current for lead acid and then switches to constant voltage.  But I don't think you can control the exact values.

**Q: Would this be suitable for use on a fishing boat? Would an occasional sprinkle/splash of water or rain drops damage the unit?**
A: The Samlex units are rock solid, and weather/water resistant.  I have one installed on a 28' Boston Whaler Center Console and I have had no problems.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Excellent Adjustable 12V Battery Charger, for Power Outages and Ham Radio.
*by T***R on July 13, 2018*

This review is for a Samlex America Solar SEC-1215UL SEC-UL Series 12V Battery Charger that Ships from and sold by Amazon.com This is a well built Hi Quality Product and well worth the price. I have several other Samlex products and all are working great. This is a current limited power supply that I can use as a float charger for a battery bank that supports power outages and a Ham radio station. The SEC-1215UL will automatically recharge the battery bank after power outages as well as provide the operating power for normal operation. The battery bank is large enough to supply power for internet, computers and lights during the power outages in my area. Many of the parameters in the charger are adjustable and information from Samlex technical support provided some really good information on these adjustments for a special application. The other battery chargers that I have, are either simple chargers or have a lot of RF interference and it is great that this unit is both a smart charger and RF free. No RF interference was observed on any of the ham bands from 160M through 70CM on either my HT, HF radios or the AM or FM broadcast bands. The problem of most Ham power supplies is that while they are RF quite they are only current limited by the smoke that they emit just before failure. Failure can occur when the utility power returns after a power outage that discharged the battery enough to cause it to draw more power than the power supply can safely produce. Adding a fuse and a series diode will protect the power supply but will leave you with a discharged battery after the fuse blows. The SEC-1215UL charger is current limited and will start recharging the battery as soon as the utility power returns. The charger has internal fuses protecting the input and output but there is no ON/OFF switch. The Amp Meter is very useful and it will give an indication of the battery's state of charge. A fully charged AGM battery will draw very little float current. The DC charger output is floating in respect to the AC input and the Case ground to prevent any ground loops. The charger does not have a fan, is absolutely quite and the instructions detail a vertical mounting solution for cooling. No Battery cables are provided but it was easy to make custom cables for my application with the pin type lugs that were provided and some wire & connectors from Lowes. The Charger as shipped, operates from 120 VAC but can be configured for 230 VAC if desired. I plan to purchase, in the near future, a Samlex America Solar SEC-1230UL Battery charger for another project. The SEC-1230UL has the same features except it has a higher output and a cooling fan. The Samlex Solar SEC-1215UL SEC-UL Series 12V Battery Charger ships with an instruction manual filled with very useful information on how to set-up and operate the charger. The charger is a nice looking unit both inside and outside. I gave the unit 5 stars because it is a super replacement for the previous noncurrent limited power supply and the great technical support from Samlex. Update: 09-28-2018 I have added two 3" X 3/4" X 1/8" steel angle brackets to the end of the battery charger that the cables attach. This allows the charger to stand with the meter visible for easy reading. No holes were drilled as the angle brackets already had holes. Two #8 screws were used to attach the angle brackets to existing holes in the charger. The first time I used the charger was to recharge a fully discharged 100AH AGM battery and after several minutes @ 15 Amps the charger warms up quite a bit. The charger changed from boost voltage to float voltage at about 2 amps. If you have more than one fully discharged 100AH battery, it would be better to recharge each one separately. I am very pleased with the Samlex Model SEC-1215UL Battery Charger.

### ⭐⭐⭐⭐⭐ Excellent unit and built well. Worth the extra $$$.
*by S***E on February 22, 2019*

This device is charging your vehicle and your battery. Best to get the better one. The unit is well constructed, comes with gauges, nice heat sink and quality connections.

### ⭐ Died after less than 2 years!
*by A***R on January 1, 2024*

When I first installed it in my van it worked great. Only used it to charge van house battery when at a campground with power. Lasted less than 2 years and now overheats whenever it is plugged in.

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*Product available on Desertcart New Zealand*
*Store origin: NZ*
*Last updated: 2026-02-07*