|Item Weight||1.7 pounds|
|Product Dimensions||7.8 x 3.5 x 2.6 inches|
|California residents||Click here for Proposition 65 warning|
|Item model number||SP3|
|Manufacturer Part Number||SP3|
|OEM Part Number||SP3|
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Schumacher SP3 3 Amp Automatic Battery Extender / Maintainer
|Price:||$34.18 & FREE Shipping. Details|
- Enter your model number to make sure this fits.
- The product is 3A Auto Battery Charger
- Easy to use
- The product is manufactured in China
- For use with 6 and 12 Volts batteries
- Scrolling digital messaging displays step by step instructions to properly charge your battery
- Auto voltage detection automatically detects 6 or 12 Volts batteries
- Hook attachment allows the unit to hang outside the work area for safety and convenience
- It includes 50 ampere quick connect clamps, 24 inch fused ring leads harness with weather cap, 12 Volts DC adapter and manual
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|Shipping||FREE Shipping||FREE Shipping||FREE Shipping||FREE Shipping||FREE Shipping||FREE Shipping|
|Item Dimensions||3.5 x 7.75 x 2.62 in||7.5 x 7 x 11 in||8 x 2 x 9 in||3 x 5 x 9.75 in||4 x 8 x 9 in||6.25 x 3.25 x 2.75 in|
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This battery extender / maintainer is ideal for maintaining stored, power sport and automotive batteries for cars, motorcycles, ATV's, RV's, boats and classic cars. The 3 ampere battery charger / maintainer automatically detects 6 or 12 Volts batteries and features multi-stage charging for added precision, safety and battery life. Float mode monitoring automatically maintains optimum battery charge while the reverse hook-up protection helps protect the battery and charger from damage. The easy to read, animated display gives you step by step instructions to properly charge your battery. Includes 50 ampere quick connect clamps, 24 inch fused ring leads harness with weather cap, 12 Volts DC adapter and a hook attachment that allows the unit to hang outside the work area for safety and convenience.
From the manufacturer
|8 Phase Multi-Stage Charging||✓||✓||✓|
|Reverse Connection Protection||✓||✓||✓||✓|
|AGM & Standard Battery Capable||✓||✓||✓||✓|
|Temperature Compensation Charging||✓||✓||✓|
|Battery Clamps Included||✓||✓||✓|
|Ring Connectors Included||✓||✓||✓||✓|
|12V Port Adapter Included||✓||✓|
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Top customer reviews
My household has two vehicles and one of them was not driven often enough to keep the battery charged and I had to use my AAA membership for a battery jump more than once.
The last service tech that came to give the vehicle a jump start suggested I get a battery charger that I can plug into the A/C. I checked out what was available at the local auto supply stores and this charger was a better buy.
I only used the alligator clips for my SUV, but this also comes with a connector that you can attach permanently to the battery and has a simple connector to the charger cord. That seems pretty useful for other types of vehicles.
This is the first charger/maintainer I saw that has the ability to fully charge empty batteries - some of the less expensive maintainers say in the documentation that you should not use them on totally flat batteries. It also has a desulpherization mode, which is something relatively new in battery chargers/maintainers, and which can bring otherwise useless batteries back to life, I'm told. So this had everything I needed and at a very attractive price point.
There is another version of this product that will communicate with a free smart phone app (iPhone and Android) and let you check status and turn it off and on via your phone or tablet, but it costs three times as much. For that price, I can walk out to the garage myself to do it!
Anyway, great product, very happy. Be patient with it. If you need faster charging, spend more money on a higher amp unit.
So, I purchased this item to recharge the battery and also provide a tricle charge when necessary. This device provides a digital reading that informs you of the charged state of your batter and if it is maintaining charge or charging.
Great quality and the digital display gives you the charge status of the battery.
This maintainer can be left on without fear of overcharging.
The SP3 is also rebranded and sold by Sears under their Diehard label ( Item # 02871239000P) Exact same item that you can sometimes find at Sears for less.
Automatic battery analyzer
Multiple connectors that are quick release interchangeable
The charger is pretty quick. It took about 4.5 hrs in 20degrees F to charge my Jeep battery from 10% to 100%.
The unit is relatively small but it is a bit heavy. I would definitely buy this again.
Been using for a couple months now on an R1 and an R6
I love that I can leave this on whatever bike I am not riding for days and come back with a fully charged battery (auto-maintain works very well)
I have not tried any completely dead batteries, but even low or just used batteries all show up as "95%" then charge for a few minutes and proceed into "Auto Maintaining" mode
Great clips and wiring, love that a quick release was included for me to attach to my R1 so i don't have to remove the main seat and support structures everytime I want to charge. I now just pop the passenger seat off with the bike key and connect the quick-release.