Charging motorcycle battery with car charger

Motocycle RiderUnderstanding the fundamentals of charging your motorcycle battery will give you a long and healthy battery life. One of the most common causes of premature battery death is leaving your motorcycle battery in a discharged state, or not charging the battery after use. There are many types of motorcycle batteries which can also be in various conditions and charge states; therefore there are many ways one can charge a motorcycle battery. We have broken this article into several sections from beginners guide to more specific motorcycle battery charging methods.

Beginner’s Guide

Lead-Acid batteries when installed on your motorcycle are actually charged by the motorcycle alternator. You probably knew this. What you may not have known is that unless you are riding on long trips or for several hours at a time, the motorcycle alternator due to size constraints is not quite strong enough to fully charge your lead-acid battery during occasional driving especially if the battery has a low charge. Therefore motorcycle batteries tend to get deep cycled faster than automotive batteries. Cars have much stronger alternators and when regularly driven will easily keep the lead-acid batteries charged preventing them from getting deeply discharged.

Video on How to Fill and Charge Yuasa Motorcycle BatteryWhen a lead-acid battery is fully discharged, you risk reducing the calendar life of the battery. Fully discharging, means taking a battery from a charged state to a discharged state where the individual cell voltage drops to 1.9v. Since lead-acid batteries for motorcycles aren’t designed for deep cycling this will negatively impact the battery and reduce the life of the battery (see battery cycle life).

Under ideal operating temperatures and ideal voltage charge, a lead-acid battery will last according to manufacturer calendar life expectations. In reality, we neglect our batteries. Also, the conditions in which they operate in have many different variables.

So deep cycling will impact your motorcycle lead-acid battery life. Temperature also plays a large role in battery life. Lead-acid batteries work optimally under an operating temperature of 25 degrees Celsius (77 degrees Fahrenheit). Higher operating temperatures will degrade battery life as can be measured by the Arrhenius Equation. Many things can affect the operating temperature of a battery.

If you live in hot desert areas and drive a motorcycle, you may experience replacing the battery more than someone who drives the same motorcycle but lives in a more temperate climate like southern California. This doesn’t mean you should move to a much colder climate to increase your battery life! Extreme cold weather also affects lead-acid battery life. Although the lead-acid chemistry type can withstand a range of temperature extremes, if a flooded lead-acid battery is allowed to discharge in extreme freezing weather, the water content is higher and more susceptible to freezing.How to Charge a Motorcycle Battery If this happens, the battery could actually experience cracking and leakage. At which point you will need to replace the battery very soon.

How to Fill and Charge a Motorcycle Battery?

This video demonstrates the typical steps required in preparing a dry charge sealed lead acid motorcycle battery. Since shipping regulations won’t allow this type of battery to be shipped with the electrolyte solution preinstalled, it is up to the consumer to install this liquid themselves.

In any case refer to the manufacturer instructions and precautions. All instructions provided by the manufacturer shall be followed when instructions are different from the techniques and process used in this video. Read Full Article

How to Maintain a Motorcycle Battery?

Even with no actual load, all batteries will self discharge. A float charger sometimes referred to as a “trickle charger” will maintain a full charge of a battery that is in storage. A battery under “no-load” will self discharge at a rate based on several factors including battery chemistry. A float charger essentially charges a battery in balance with its discharge rate to maintain a fully charged battery without over-charging or allowing it to drop below a certain voltage. A microprocessor monitors the voltage of the battery and will cycle on when a maximum allowed discharge is reached (i.e. 14.4V) and will continue charging until the maximum “float mode” charge is reached (i.e. 14.8V). The float mode maximum charge is typically lower than a standard mode full charge to increase the life of the battery in storage.

NOCO NOCO Genius G750 6V/12V .75A UltraSafe Smart Battery Charger
Automotive Parts and Accessories (NOCO)
  • Charge fully drained lead-acid batteries up to 30Ah, including ATVs, lawn mowers and motorcycles. Safely maintain all types of automotive, marine, RV, powersport...
  • Cutting-edge technology delivers superior performance. Charge 2x faster, repair damaged batteries and use with micro-hybrid start-stop vehicles and CANBUS electrical...
  • Streamlined design that s ultra-compact, portable and incredibly lightweight. It s impact, UV and water-resistant (IP60) and easily mounts into any AC outlet.
  • Stay safely connected 24/7. Monitors battery activity for safe and efficient charging, automatically minimizes energy consumption and includes spark-proof technology...
  • Intuitive LED indicators provide visual state-of-charge feedback and diagnostic information, even when in maintenance mode.
Schumacher Schumacher WM-12 Cable Connector for Battery Charger/Maintainer
Automotive Parts and Accessories (Schumacher)
  • Extra lead allows you to quickly and easily connect and charge different items with your charger
  • An inexpensive way to get more from your battery chargers
  • Made for use with Schumacher electric chargers
  • Color coated for user safety
  • Very user-friendly
AURELIO TECH AURELIO TECH 12V/1.2A Transportable 3-mode Battery Charger Tender Motorcycle Car Boat ATV RV
Automotive Parts and Accessories (AURELIO TECH)
  • Efficiency (at 100% load): =85% Model: 12V / 1.2A Dimensions: 3.8*1.9*2.2 inch
  • Input Voltage Rating 110-240V Connection: NO Need to Disconnect AFTER CHARGED Manufacturer Part Number: BC-1212
  • Recommended Battery Capacity: 12V / 7-10Ah Input Frequency: 50-60HZ Maximum Output Power: 15W
  • Ripple:
  • Leakage Current:
Battery Tender 021-0123 Battery Tender Junior 12V, 0.75A Battery Charger will charge and maintain your battery so that it is ready to go when you are! It's lightweight, fully automatic and easy to use
Automotive Parts and Accessories (Battery Tender)
  • Spark proof during lead connection, reverse polarity protected and includes a 12-foot output cord and 5-year warranty
  • Perfect for all lead-acid, flooded or sealed maintenance free batteries (AGM and gel cell)
  • Complete 4-step charging program (Initialization, Bulk Charge, Absorption Mode, Float Mode)
  • Automatically switches to float / maintenance voltage after fully charging the battery
  • Solid state two color LED indicates stage of charger.
  • If the battery voltage drops too far under load, full charger output power resumes
  • Spark proof, Reverse polarity protected, 12 output cord
MOTOPOWER MP00205A 12V 800mA Fully Automatic Battery Charger / Maintainer for Cars, Motorcycles, ATVs, RVs, Powersports, Boat and More. Smart, Compact and Eco Friendly
Automotive Parts and Accessories (MOTOPOWER)
  • It can charge all types of 12V lead-acid batteries, including flooded or sealed maintenance free batteries (AGM & gel cell). It s the best smart charger for...
  • Fully automatic - No need of any manual operation, just plug and leave it for charging and maintaining your batteries automatically for long time. The microprocessor...
  • Micro-processor Controlled program. No worry about overcharge, short circuit and reverse palarity.
  • With quick release connection options: Ring Terminals or Alligator Clips.
  • Energy Saving design with one LED indicator to display different charging status.

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