Collection: Battery Tools & Boosters (41)

Meet the GENIUS5UK. Similar to our G3500, just better. It's 34% smaller and delivers over 43% more power. And it's simpler and easier to use than ever before.

Do more with Genius. Designed for 6-volt and 12-volt lead-acid automotive, marine, and deep-cycle batteries, including flooded, gel, AGM, and maintenance-free, plus lithium-ion batteries.

Enjoy precision charging. An integrated thermal sensor detects the ambient temperature and alters the charge to eliminate over-charging in hot climates and under-charging in cold climates.

Charge dead batteries. The GENIUS5UK charges dead batteries as low as 1-volt. Or use the all-new Force Mode that allows you to take control and manually begin charging dead batteries down to zero volts.

Simple to set up and use. Plug-in, connect to the battery, select a charge mode, and start charging your battery. A fully-automatic, worry-free battery charger for year-round use.

Restore your battery. Detects sulfation and acid stratification and restores lost performance for stronger engine starts and extended battery life. Automatically repairs and reverses battery damage.

Compatible with all types of vehicles. Charge and maintain cars, motorcycles, lawnmowers, ATVs, tractors, trucks, SUVs, boats, classic cars, performance, racing and more - you name it.

An ultra-compact and high efficiency design with maximum power density, dynamic battery tracking for understanding the status of the battery, universal input (100-240 VAC, 50-60Hz), and maximized AC power with 99% power factor correction.

Charge safely 24/7 without any risk of overcharging your batteries, plus additional safety like spark-proof connections, and reverse polarity protection.

Year-round charging. Provides all-season, all-weather charging for a healthy battery. Zero overcharge. Leave plugged in 24/7 with no worries of overcharging. Auto memory. Automatically returns to its last selected mode.

Connect to the battery with two highly-engineered needle-nose clamps with integrated M6 eyelets for directly connecting to the battery terminal. The clamps have wide clamping range and improved clamping force for higher conductivity.

Resistant to oil, gas, grease, water, chemical, UV and abrasion

Meet the GENIUS1UK. Similar to our G750, just better. It's 35% smaller and delivers over 25% more power. And it's simpler and easier to use than ever before.

Do more with Genius. Designed for 6-volt and 12-volt lead-acid automotive, marine, and deep-cycle batteries, including flooded, gel, AGM, and maintenance-free, plus lithium-ion batteries.

Enjoy precision charging. An integrated thermal sensor detects the ambient temperature and alters the charge to eliminate over-charging in hot climates and under-charging in cold climates.

Charge dead batteries. The GENIUS1UK charges dead batteries as low as 1-volt. Or use the all-new Force Mode that allows you to take control and manually begin charging dead batteries down to zero volts.

Simple to set up and use. Plug-in, connect to the battery, select a charge mode, and start charging your battery. A fully-automatic, worry-free battery charger for year-round use.

Restore your battery. Detects sulfation and acid stratification and restores lost performance for stronger engine starts and extended battery life. Automatically repairs and reverses battery damage.

Compatible with all types of vehicles. Charge and maintain cars, motorcycles, lawnmowers, ATVs, tractors, trucks, SUVs, boats, classic cars, performance, racing and more - you name it.

An ultra-compact and high efficiency design with maximum power density, dynamic battery tracking for understanding the status of the battery, universal input (100-240 VAC, 50-60Hz), and maximized AC power with 99% power factor correction.

Charge safely 24/7 without any risk of overcharging your batteries, plus additional safety like spark-proof connections, and reverse polarity protection.

Year-round charging. Provides all-season, all-weather charging for a healthy battery. Zero overcharge. Leave plugged in 24/7 with no worries of overcharging. Auto memory. Automatically returns to its last selected mode.

Connect to the battery with two highly-engineered needle-nose clamps with integrated M6 eyelets for directly connecting to the battery terminal. The clamps have wide clamping range and improved clamping force for higher conductivity.

Resistant to oil, gas, grease, water, chemical, UV and abrasion

Meet the GENIUS2UK. Similar to our G1100, just better. It's 31% smaller and delivers over 82% more power. And it's simpler and easier to use than ever before.

Do more with Genius. Designed for 6-volt and 12-volt lead-acid automotive, marine, and deep-cycle batteries, including flooded, gel, AGM, and maintenance-free, plus lithium-ion batteries.

Enjoy precision charging. An integrated thermal sensor detects the ambient temperature and alters the charge to eliminate over-charging in hot climates and under-charging in cold climates.

Charge dead batteries. The GENIUS2UK charges dead batteries as low as 1-volt. Or use the all-new Force Mode that allows you to take control and manually begin charging dead batteries down to zero volts.

Simple to set up and use. Plug-in, connect to the battery, select a charge mode, and start charging your battery. A fully-automatic, worry-free battery charger for year-round use.

Restore your battery. Detects sulfation and acid stratification and restores lost performance for stronger engine starts and extended battery life. Automatically repairs and reverses battery damage.

Compatible with all types of vehicles. Charge and maintain cars, motorcycles, lawnmowers, ATVs, tractors, trucks, SUVs, boats, classic cars, performance, racing and more - you name it.

An ultra-compact and high efficiency design with maximum power density, dynamic battery tracking for understanding the status of the battery, universal input (100-240 VAC, 50-60Hz), and maximized AC power with 99% power factor correction.

Charge safely 24/7 without any risk of overcharging your batteries, plus additional safety like spark-proof connections, and reverse polarity protection.

Year-round charging. Provides all-season, all-weather charging for a healthy battery. Zero overcharge. Leave plugged in 24/7 with no worries of overcharging. Auto memory. Automatically returns to its last selected mode.

Connect to the battery with two highly-engineered needle-nose clamps with integrated M6 eyelets for directly connecting to the battery terminal. The clamps have wide clamping range and improved clamping force for higher conductivity.

Resistant to oil, gas, grease, water, chemical, UV and abrasion

Meet the GENIUS10UK. Similar to our G7200, just better. It's 17% smaller and delivers over 28% more power. And it's simpler and easier to use than ever before.

Do more with Genius. Designed for 6-volt and 12-volt lead-acid automotive, marine, and deep-cycle batteries, including flooded, gel, AGM, and maintenance-free, plus lithium-ion batteries.

Enjoy precision charging. An integrated thermal sensor detects the ambient temperature and alters the charge to eliminate over-charging in hot climates and under-charging in cold climates.

Charge dead batteries. The GENIUS10UK charges dead batteries as low as 1-volt. Or use the all-new Force Mode that allows you to take control and manually begin charging dead batteries down to zero volts.

Simple to set up and use. Plug-in, connect to the battery, select a charge mode, and start charging your battery. A fully-automatic, worry-free battery charger for year-round use.

Restore your battery. Detects sulfation and acid stratification and restores lost performance for stronger engine starts and extended battery life. Automatically repairs and reverses battery damage.

Compatible with all types of vehicles. Charge and maintain cars, motorcycles, lawnmowers, ATVs, tractors, trucks, SUVs, boats, classic cars, performance, racing and more - you name it.

An ultra-compact and high efficiency design with maximum power density, dynamic battery tracking for understanding the status of the battery, universal input (100-240 VAC, 50-60Hz), and maximized AC power with 99% power factor correction.

Charge safely 24/7 without any risk of overcharging your batteries, plus additional safety like spark-proof connections, and reverse polarity protection.

Year-round charging. Provides all-season, all-weather charging for a healthy battery. Zero overcharge. Leave plugged in 24/7 with no worries of overcharging. Auto memory. Automatically returns to its last selected mode.

Connect to the battery with two highly-engineered needle-nose clamps with integrated M10 eyelets for directly connecting to the battery terminal. The clamps have wide clamping range and improved clamping force for higher conductivity.

Resistant to oil, gas, grease, water, chemical, UV and abrasion