Best Motorcycle Battery Chargers: Tenders, Maintainers and Smart Picks

For most riders the Battery Tender Junior is the best all round pick here, a 12V, 750 mA automatic charger and maintainer from the best known name in powersports that you can leave connected over the off season. If you want a bit more charging speed, the Battery Tender Plus lists 1.25 amps and the MOTOPOWER lists 1.5 amps. If you run a LiFePO4 lithium battery, look at the Mroinge MBC022 or the 1.1 amp motorcycle float charger instead, since both list lithium support. Match the charger to your battery size and chemistry.

The terms overlap a lot. A trickle charger pushes a slow, steady current; a maintainer or tender is a smart version that charges a battery and then switches to a float mode to hold it without overcharging. Most picks here, including both Battery Tender units, are described as smarter than a plain trickle charger, which means they manage the charge automatically. For a bike that sits between rides, a maintainer or tender is usually what you want, because it can stay connected safely.

An automatic maintainer or tender is designed to stay connected over long periods and switch to a float charge once the battery is full, which is exactly what the Battery Tender Junior and Plus and the 1.1 amp motorcycle float charger are built for. That is the common way riders keep a battery healthy through winter storage. These listings do not promise any specific safety rating, so connect the charger in a dry, ventilated spot and follow the instructions for your charger and battery.

Yes. A lithium LiFePO4 battery needs a charger that specifically lists LiFePO4 support, because its charging profile differs from lead acid. In this guide the Mroinge MBC022, the PZ.P and the 1.1 amp motorcycle float charger all name LiFePO4 lithium in their listings, so those are the ones to consider for a lithium bike. The Battery Tender units and the MOTOPOWER do not mention lithium, so treat them as lead acid and AGM chargers and match them to a standard battery.

It depends on what you want to do. For maintaining a small powersports battery, a low output like the 750 mA Battery Tender Junior or the 1.1 to 2 amp units here is plenty, and a small battery can be stressed by far more current than it needs. To recharge a battery that has run down, or to cover a car or truck too, a higher output like the 15 amp PZ.P charges faster. None of these listings promise an exact charge time, so treat higher amps as faster charging and lower amps as gentle maintaining.

AGM and gel are types of lead acid battery, and the chargers here are built for lead acid. The Mroinge MBC022 and the 1.1 amp motorcycle float charger name AGM and gel directly in their listings, and the other lead acid units will generally suit a standard AGM battery. Where a listing does not spell out AGM, check the product page before buying. The key point is to confirm your battery chemistry and select the matching mode, rather than assume a charger covers every type.

An SAE connector is the small two pin quick-connect plug used on many powersports chargers. You leave one lead, often called a pigtail, attached to the battery, and then clip the charger on and off in seconds without reaching for the terminals each time. The universal trickle charger in this guide lists an SAE cable in the box. You do not strictly need one, but it makes regular charging much quicker on a bike you top up often.

Some can. The universal SAE trickle charger lists both 6V and 12V in this guide, which is useful for older bikes or small 6V batteries alongside a standard 12V setup. The Battery Tender units and the MOTOPOWER are 12V only, and the PZ.P lists 12V and 24V for larger vehicles. Always set the voltage to match your battery, because charging a 6V battery on a 12V setting can damage it.