Schumacher SEM-1562A 1.5 Amp Speed Charge Maintainer

Schumacher SEM-1562A 1.5 Amp Speed Charge Maintainer is surely an intelligent lead-acid battery charger designed for 12 volt applications as many vehicle types including everyday cars, trucks and motorcycles to be able to boats and ATVs. This versatility also extends to all types of lead-acid 12 volt battery packs. That includes GEL, MF, Wet, and AGM batteries.
Being an intelligent charger, the 3300 will care for the battery using a new four-step process. It is this multi-step practice that CTEK was built on as a company. The charger will examine, repair, and recharge batteries with care so the battery isn't harmed and possesses the longest life doable.

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Product Description

Amazon.com Product Description
The Schumacher SEM-1562A 1.5 Amp Speed Charge Maintainer is a unique AC powered automatic charging accessory for use with everything from smaller batteries designed for motorcycles, tractors and mowers, to standard car / truck batteries and marine / deep cycle batteries. Designed around an internal microprocessor which constantly collects information from the battery that the unit is attached to, the SEM-1562A effortlessly and quickly ensures that your 6 and 12-volt batteries are maintained at optimal levels, and does so in the fastest and most convenient means possible.

Microprocessor Controlled Charging for 6 and 12 Volt Batteries
Microprocessor controlled charging and maintenance is simply the easiest way to keep batteries at optimal power levels. This convenience and speed is experienced from the moment that the SEM-1562A is connected. First, the unit utilizes the user's choice of either easy-to-connect and remove battery clips, or permanent ring terminals (both included), each of which allows for charging or maintaining of batteries whether they be in or out of vehicles. The SEM-1562A also features automatic voltage detection which allows it to automatically determine whether the connected cell is a 6-volt battery or a 12-volt variety. This eliminates the possibility of damaging a battery due to choosing the wrong charging settings. Once your battery type has been identifified, a multi-phase charging process kicks in which plays out via the unit's automatic Charge / Maintain modes. Tipped off by the data analyzed by the onboard microprocessor, your battery is supplied with a constant charge until it reaches a preset level - at which point charging ceases. Eventually, if the charge falls below a certain level the SEM-1562A automatically transitions into Maintain Mode, delivering a small, safe charge that will raise the battery's level back to where it should be.


In addition, because of the constant monitoring the battery, the SEM-1562A can react to charging needs swiftly, efficiently and accurately, allowing charging cycles to click on and off in the same way. Because of this, batteries can be left attached to the SEM-1562A indefinately for storage without the risk of overcharging and/or damage. Additional features include: automatic temperature compensation which adjusts the maximum charge voltage and maximum maintain voltage based on the ambient air temperature; thermal runaway, which automatically reduces the current if it detects the battery may be getting too hot; an auto-start feature that keeps power from flowing unless a proper connection exists, or in the case of a reverse hook-up; and a Desulphation mode for charging batteries left discharged for an extended period of time.
Specifications

• Charger Type - Fully Automatic Microprocessor Controlled
• Input Voltage - 120 VAC
• Input Current Cont: 0.41A / 0.32A
• Output Current Rating - 12V / 6V 1.5A
• Maximum Charge Voltage - 12V – 14.8V / 6V – 7.4V
• Dimensions - 2⅝" H x 6" W x 3" D
• Product Weight - 2.5 lbs.

What's in the Box

• Schumacher SEM-1562A 1.5-amp Speed Charge Maintainer
• Battery Clip Cable Assembly
• Ring Terminal Cable Assembly
• Users manual and warranty information

Two-Year Limited Warranty
Schumacher Electric Corporation (the "Manufacturer") warrants this battery charger for two (2) years from the date of purchase at retail against defective material or workmanship that may occur under normal use and care. If your unit is not free from defective material or workmanship, Manufacturer's obligation under this warranty is solely to repair or replace your product with a new or reconditioned unit at the option of the Manufacturer. It is the obligation of the purchaser to forward the unit, along with mailing charges prepaid to the Manufacturer or its authorized representatives in order for repair or replacement to occur.
About Schumacher Electric Corporation
Since 1947, Schumacher Electric Corporation has been leading change and driving performance to exceed its customers' expectations. Engineered patent pending technologies and award winning marketing allows Schumacher to be the brand of choice when it comes to portable power and battery charger/jump starter/maintainer/tester needs. Passion and commitment is the Schumacher way which shows as they are official supplier for chargers, jump starters and inverters for NASCAR.
Schumacher's Speed Charge Maintainer maintains both 6-volt and 12-volt batteries, keeping them at full charge using float-mode monitoring. The unit will automatically switch from full-charge to float-mode monitoring when the battery is charged to prevent damage. Smart display LEDs indicate whether the unit is in charged, charging, or trouble modes. The SEM-1562A is perfect for charging small batteries, maintaining small and large batteries kept in storage, and batteries for motorcycles, classic cars, ATVs, and boats. It features a quick disconnect harness for easy removal, and reverse hookup protection in case the clamps are accidentally connected to the wrong terminals. In cold climates, this unit is indispensable for keeping batteries warm overnight and ready for starting.

Product Details

• Product Dimensions: 7 x 4 x 11 inches ; 2.5 pounds
• Shipping Weight: 2.6 pounds (View shipping rates and policies)
• Shipping: This item is also available for shipping to select countries outside the U.S.
• ASIN: B0009IBJAS
• California residents: Click here for Proposition 65 warning.
• Item model number: SEM-1562A
  

Product Features

• 6-volt and 12-volt battery charger; automatically changes from full-charge to float-mode monitoring to prevent overcharging
• Ideal for keeping batteries charged while in storage
• Rugged plastic housing
• Includes charger, jump cables, ring connectors
• 7.1 by 10.5 by 5.9 inches; 5 pounds; 1-year limited warranty

Customer Reviews

This is a great charger but the same company (schumacher's battery maintainer), makes an identical product for sears, branded as diehard.
It costs the same as on amazon but comes with a 3 year warranty, not the standard 1 yr. warranty found here. Plus you don't have to deal with shipping hassles when you can just go to your local sears and pick one up or exchange if you have problems.

Bought this charger to charge/maintain my deep cycle battery used for emergency power outages. The manual included with this charger even describes it charging deep cycle batteries and gives a charging estimate of ~36hrs. Fine for what I'm looking for. The charger repeatedly aborted the charge on my brand-new battery. Their customer service tech said it wasn't meant to charge deep cycle batteries due to the higher internal resistance. This should have been made more clear in the packaging, labelling and product description. I've lost time and money. Now I have to go buy a 'real' charger...
Update - The charger was actually DOA. I returned it and replaced the charger with a new one on an auto-shop recommendation. It is working fine. Schumacher didn't want to own up to a bum charger when I called them earlier.