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Bosch C3 Fully Automatic 4-Mode 6/12V Smart Battery Charger and Maintainer (3.8 Amps)

by Bosch
| 3 answered questions

List Price: $69.99
Price: $59.31 & FREE Shipping. Details
You Save: $10.68 (15%)
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Ships from and sold by Amazon.com.
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  • SmartAMPs Technology utilizes optimum charge current (from .8 to 3.8 amps) depending on battery's condition and charging stage, providing fast, high quality charges that ensure maximum battery life
  • Micro Computer Unit provides state-of-the-art charging to restore sulfated, discharged, and acid stratified batteries to their original capacity without under or overcharging
  • One touch smart charging with automatic voltage detection for easy operation
  • Maintenance charging mode automatically switches on when battery drops below 12.8V
  • Suitable for all types of lead-acid batteries - AGM, WET, GEL, open, VRLA and cold - in trucks, cars, motorcycles, lawn tractors, recreational vehicles batteries
  • Spark, short circuit and reverse polarity protection ensure the safety of the operator and health of the battery
  • Dust and water splash resistant
  • Included accessories like hook, charger cable with built in fuse, and two fully insulated charger clamps
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9 new from $35.68 2 used from $40.71

Frequently Bought Together

Bosch C3  Fully Automatic 4-Mode 6/12V Smart Battery Charger and Maintainer (3.8 Amps) + Bosch C35AC0 Quick Connect Cable Harness for C3 Battery Charger with Built-in Cable Fuse
Price for both: $69.30

Buy the selected items together


Product Information

Technical Details
BrandBosch
Item Weight2.4 pounds
Product Dimensions11.2 x 7.7 x 3.2 inches
Item model numberC3
Manufacturer Part NumberC3
OEM Part Number 0092C35000
ABPA Partslink Number 0092C35000
  
Additional Information
ASINB004TS1IB4
Best Sellers Rank #15,287 in Automotive (See top 100)
Shipping Weight3.1 pounds (View shipping rates and policies)
ShippingCurrently, item can be shipped only within the U.S. and to APO/FPO addresses. For APO/FPO shipments, please check with the manufacturer regarding warranty and support issues.
Date First AvailableMarch 24, 2011
  
Warranty & Support
Warranty, Parts: Parts
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Product Description

Amazon.com

The Bosch C3 6V/12V Smart Battery Charger and Maintainer is an ultra portable, automotive battery charging and maintaining device. It can be used with a variety of lead-acid batteries (AGM, WET, GEL, open, and VRLA) in vehicles such as cars, light-duty trucks, motorcycles, antique cars, boats, jet skis, ATVs, snow mobiles, lawnmowers and RVs. The intelligent C3 Battery Charger and Maintainer from Bosch provides battery charging that is easy and safe and will restore sulfated, acid stratified, and discharged batteries to their original capacity without under- or overcharging. By using a Bosch Battery Charger and Maintainer you will ensure the longest life of your battery. Additional features include an integrated AC power cord and battery clamps, dust and splash proof construction and a mounting hook for truly portable use.

The main body of the Bosch C3 6V and 12V Fully Automatic 4-Mode Battery Charger and Maintainer
Smart charging and maintaining of 6V and 12V batteries that goes wherever you do.
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Reliable 6V/12V Charging With Maximum Safety

Vehicles today are often equipped with a wide array of power-robbing accessories such as GPS navigation units, stereo sound systems, video players, daytime running lights, and many other electrical convenience functions. All these items place a high demand on a vehicle's battery which can lead to discharge, sulfation, or acid stratification. The best way to ensure reliable starting of your vehicle is to keep a regular check on the battery charge--especially in vehicles not used year-round, such as motorcycles, convertibles and classic cars. Battery chargers from Bosch are first aid for exhausted batteries and return them to top condition.

The box contents of the Bosch C3 6V and 12V Fully Automatic 4-Mode Battery Charger and Maintainer
Everything you need is integrated and/or included in the box.
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The Bosch C3 and C7 Battery Chargers and Maintainers, each using a mounting hook for use on-vehicle
The included charger mounting hook allows for easy charger placement between your AC power source and your battery.
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Intelligent charging helps maintain and restore batteries
Intelligent charging helps maintain and restore batteries.
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The Bosch Battery Charger and Maintainer is a smart charger operated by a MCU processor that provides state-of-the-art charging technology that allows the charger to interact with and respond to the condition of the battery. It modifies its charge action based on the feedback from the battery in order to provide a high quality charge that restores sulfated and discharged batteries to their original capacity without under- or overcharging.

The Most Intelligent Battery Chargers

Since it is a smart charger, it will automatically detect the voltage of the battery and select the proper series of charging stages based on the needs of the battery. It can be left connected to the battery and will switch to the maintenance charging mode when the battery voltage falls below 12.8V. The float and maintenance cycles are repeated indefinitely to keep the battery at full charge without overcharging.

Unlike manual and automatic battery chargers that treat all batteries the same no matter what condition they are in and charge with a steady, unregulated current, the Bosch Battery Charger and Maintainer uses SmartAMPS Technology, the optimum charge current depending on the battery’s condition and the current charging stage, to provide a fast, high quality charge that ensures the longest life of your battery.

One-Button Smart Charging

You do not need to be a specialist to use the Bosch Battery Charger and Maintainer. Simply attach the two insulated charger clamps integrated into the opposite end to the appropriate battery posts of the lead-acid battery being charged or maintained. Then plug in the AC power cord, integrated at one end of the charger, to a standard 110-volt household outlet. Finally use the mode button to select from 4 charging modes to instantly begin charging. Its is as easy as connect, plug in, and turn on. For extra convenience the included charger mounting hook allows you to hang the charger upright in the best spot possible between the battery and the AC power source.

The Safest Charger to Use

Safety is an important concern around any power source. One-button operation, built-in pulse and maintenance charge function, and a comprehensive safety concept make the Bosch C3 Battery Charger and Maintainer very safe to use. If an abnormal situation occurs, such as when the charger is incorrectly connected or there is an abnormal charging time, the charger switches automatically to standby mode to protect the battery from damage. Additionally the charger is designed to protect against spark, short-circuit, reverse polarity, and overheating, making this the safest charger you can use.

What's in the Box?

Bosch C3 6V and 12V 4-Mode Smart Battery Charger and Maintainer, charger mounting hook, charger cable with built in fuse, 2 fully insulated charger clamps, harness with mounting rings and instruction manual.

About The Bosch Group

The Bosch Group is a leading global supplier of technology and services in the areas of automotive and industrial technology, consumer goods, and building technology. The Bosch Group comprises Robert Bosch GmbH and its more than 300 subsidiaries and regional companies in over 60 countries. If its sales and service partners are included, then Bosch is represented in roughly 150 countries. This worldwide development, manufacturing, and sales network is the foundation for growth. Each year, Bosch spends more than 3.5 billion euros for research and development, and applies for some 3,800 patents worldwide. With all its products and services, Bosch enhances the quality of life by providing solutions which are both innovative and beneficia

Product Description

The Bosch battery charger for 6 volt and 12 volt lead acid batteries (AGM, WET, GEL, open, VRLA) uses state-of-the-art charging technology and self-monitoring functions to ensure high quality charging for long battery life. One button operation, built-in pulse and trickle charge function, and a comprehensive safety concept make these chargers very easy and safe to use. Built in safety features like spark, short circuit and reverse polarity protection ensure the safety of the operator and the health of the battery.


Customer Questions & Answers

Customer Reviews

It has been very helpful to us and very easy to use.
TC
There are other battery chargers that if power is interrupted and comes back on, the charger will continue with its trickle maintenance mode.
W. Shimet
I am happy to have this fine product from a great name, Bosch.
David

Most Helpful Customer Reviews

35 of 39 people found the following review helpful By GA Doc on May 1, 2013
Verified Purchase
I've had this charger for almost 2 years. At first I was quite impressed with the design and seemingly high quality. It did a good job charging a riding mower battery and car batteries. However, I quickly began to miss my old analog battery charger that was over 30 years old and had a quick charge function.

The "smart" functions interfere with some of the things I needed to do--charge a really drained 12V battery (it couldn't accurately determine whether it was a 6V or 12V), or charge a battery pack that was neither 6V nor 12V. Yes, I realize this a safety feature but I'm smart enough to know how to charge a battery correctly manually.

I've grumbled and put up with it (especially when it would go off when the power was cut and then not come on automatically), but I recently discovered it is no longer responding to the push button. I have to spend 5 minutes squishing or rubbing it in every direction before it apparently makes contact inside and changes the mode. Very very frustrating.

Here's the kicker: Although it has a 2-warranty, Bosch states, "The limited warranty further excludes normal wear and tear on parts and damage to fragile components (e.g. switches)." Seriously??? The ONLY moving part on this unit and it's fragile? Not worth the money if it's going to fail before 2 years.
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19 of 23 people found the following review helpful By S. langille on January 5, 2013
As inteligent as this units charging features are there is a basic flaw in its logic when it comes to being a battery maintainer. You need to push a button before it will do anything! So, if you have you battery being maintained and the power is interupted for a split second, it will just sit there and do nothing until you notice and push the button again. Just imagine coming out to your garage to start your lawn tractor after a long winter to find your battery dead because the power flikered one evening during the winter.
Pretty dumb design for a smart maintainer.
If you want it for a charger, it is VERY well built as you would expect from Bosch.
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22 of 28 people found the following review helpful By Darby on February 15, 2013
The Bosch C3 battery charger is a "smart" charger, which detects the voltage of your battery and decides if it is 6V or 12V, and then charges accordingly. However, there is a very serious flaw here. What if your 12V car battery is heavily discharged to a voltage less than 6V?

Answer: the charger fails, it will NOT recharge your battery back to 12 Volts.

If your battery currently is discharged to less than 6 volts the C3 "smart" chip presumes that your battery is therefore only a 6V battery, and will charge it only to 6 Volts, not the 12 Volts which you need. There is NOTHING you can do to get it to charge to 12V if the charge has drained briefly to less than 6V, regardless of the age or quality of your battery. You are out of luck.

So, a great battery charger if you only need to "top it off", but it will fail you completly if you left your dome light on while away on vacation and then need to recharge back to 12V. That is what happened to me, and I had to go out and buy a different brand battery charger to recover the 12V charge in my perfectly good car battery.

Not worth it.
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1 of 1 people found the following review helpful By Louis W. Melton on December 8, 2013
Verified Purchase
Excellent quality and performs as designed. Really missed the mark for having to re-set following power interruption. Would not be suitable for using in a location such as remote RV or boat storage.
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1 of 1 people found the following review helpful By Cliff on October 14, 2013
Verified Purchase
I bought this on an Amazon lightning deal and have many things to keep charged at home (Motorcycle, boat, spare trolling battery, car) so rather than unplugging my old charger and periodically rotating to different batteries, I decided to get this one as a spare.

It's a smart charger and so far hasn't let me down in the charging department. However, two this worry/annoy me:

1. You have to press the button for it to do anything. If you loose power for a second, you have to remember to push the button again.

2. The alligator clips are ok, but you basically screw them onto the wire. This wire can therefore be used either as a permanent direct connection to a battery (very handy on a motorcycle) which you can then quick disconnect/reconnect. OR you can use them with the alligator clips. It would have been MUCH better to include two set of wires

3. They use a quick disconnect unlike any other brand so it's not compatible with other chargers.

For these reason, I like my older one better:
http://www.amazon.com/s/ref=nb_sb_noss?url=search-alias%3Dautomotive&field-keywords=B000O707IO

It basically comes with a set of terminal I permanently leave attached to my boat and can quickly plug into it. I keep the alligator clips for the trolling motor. Also, it's totally plug and play (and water resistant). I leave it charging on my boat while raining with no worries (although I keep the cord/plug off of the floor). The wiring on the Xtreme Charger are also thicker gauge/ more durable. The Extreme Charger 12 is more expensive but also reconditions batteries by breaking down the crystals that form on the lead plates.
Read more ›
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1 of 1 people found the following review helpful By Ltek on May 3, 2013
Verified Purchase
I bought this because of the built-in desulfator feature. The issue is it does not allow you to enable the feature manually. I'm pretty sure my SLA battery needs to be reconditioned since the charge does not last long. But this charge never goes into desulfator mode.
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