Battery charger CS ONE 12V 8A 40-330
Index: 40-330
Battery charger CS ONE, charging voltage: 12 V, charging current: 8A, power supply: 230V, battery type: AGM/Ca/EFB/GEL/LiFePO4/MF/WET
CTEK CS ONE
12V | Revolutionary adaptive battery charger and maintainer

APTO™ technology automatically recognises the type of battery being used and then automatically delivers a tailored charging program, informing you how long it will take to charge the battery and be ready for use. No buttons to press or modes to select – just connect the CS ONE to any 12 V battery and simply charge.
Non-polarised clamps mean you don't even have to worry about which clamp goes where, so you'll never make a wrong connection again. The clamps are also spark-free, so don't worry if you accidentally touch them together. Unlock additional features using the CTEK app with Bluetooth® support. Select "RECOND" to restore and regenerate the battery. Choose "WAKE UP" for lithium batteries with under-voltage protection or to bring deeply discharged lead-acid batteries back to life. Select "SUPPLY" to turn the CS ONE into a handy 12 V power source. You can also monitor the voltage and current delivered by the charger.
- RECOND option - regeneration and recovery of lead-acid batteries.
- WAKE UP option - reviving seemingly dead lithium and lead-acid batteries.
- SUPPLY - turning the CS ONE into a 12 V power supply.
- Monitoring of charging voltage and current.
PRODUCT FEATURES
- 12 V POWER SUPPLY for maintaining the battery during service work and keeping the vehicle powered during battery replacement/removal.
- Can be safely left connected for extended periods during maintenance charging.
- New, durable casing for easy handling, with a unique rear mounting system for quick connection of CS accessories.
UNBOXING
HOW TO CONNECT
TECHNICAL DATA
| Charging category | AC charging |
| Input voltage | 220–240 V AC, 47–63 Hz, 1.2 A |
| Output voltage | 12 V, 8.0 A |
| Battery type | Lead-acid; Lithium-ion |
| Battery types | 12 V: WET; MF; Ca/Ca; AGM; EFB; GEL; LiFePO₄ |
| Battery capacity | 10-130 Ah |
| Battery capacity CEC-400 | 10-130 Ah |
| Battery voltage | 12 V |
| Reverse current draw* | Corresponds to less than 1.5 Ah/month |
| Operating ambient temperature | -30 ˚C to +50 ˚C |
| Cooling | natural convection |
| Initial voltage | Lead-acid battery types 1.5 V. 1.5 V LiFePO₄. |
| Frequency | 50 Hz |
| Ripple** | Less than 4% |
| Connectivity | BLUETOOTH® LE 5.1 |
| Temperature compensation | Built-in charging voltage compensation based on ambient temperature |
| Compliance | ETSI EN 300 328; RED; EN 61000-6-3; EN 61000-6-1; ETSI EN 301 489-1; ETSI EN 301 489-17; EN 60 335-2-29; EN 60335-1; SS-EN ISO 13732-1:2008 |
| Casing material | Plastic |
| Rated voltage (input) | 230 V |
| Protection class | IP65 |
| Power cord length (input) | 1.4 m |
| App support | CTEK app for Android and IOS |
| Dimensions (L x W x H) | 235 x 88 x 52 mm |
| Net weight (unit with cables) | 0.675 kg |
| Detachable charging cable length (output) | 2 m |
| Warranty | 5 years |
*) Reverse current is the current that drains the battery if the charger is not connected to the mains. CTEK chargers have a very low reverse current.
**) The quality of the charging voltage and charging current is very important. High current ripple heats the battery, causing the positive electrode to age. High voltage ripple can damage other equipment connected to the battery. CTEK battery chargers produce very clean voltage and current with low ripple.
Description
CTEK CS ONE
12V | Revolutionary adaptive battery charger and maintainer

APTO™ technology automatically recognises the type of battery being used and then automatically delivers a tailored charging program, informing you how long it will take to charge the battery and be ready for use. No buttons to press or modes to select – just connect the CS ONE to any 12 V battery and simply charge.
Non-polarised clamps mean you don't even have to worry about which clamp goes where, so you'll never make a wrong connection again. The clamps are also spark-free, so don't worry if you accidentally touch them together. Unlock additional features using the CTEK app with Bluetooth® support. Select "RECOND" to restore and regenerate the battery. Choose "WAKE UP" for lithium batteries with under-voltage protection or to bring deeply discharged lead-acid batteries back to life. Select "SUPPLY" to turn the CS ONE into a handy 12 V power source. You can also monitor the voltage and current delivered by the charger.
- RECOND option - regeneration and recovery of lead-acid batteries.
- WAKE UP option - reviving seemingly dead lithium and lead-acid batteries.
- SUPPLY - turning the CS ONE into a 12 V power supply.
- Monitoring of charging voltage and current.
PRODUCT FEATURES
- 12 V POWER SUPPLY for maintaining the battery during service work and keeping the vehicle powered during battery replacement/removal.
- Can be safely left connected for extended periods during maintenance charging.
- New, durable casing for easy handling, with a unique rear mounting system for quick connection of CS accessories.
UNBOXING
HOW TO CONNECT
TECHNICAL DATA
| Charging category | AC charging |
| Input voltage | 220–240 V AC, 47–63 Hz, 1.2 A |
| Output voltage | 12 V, 8.0 A |
| Battery type | Lead-acid; Lithium-ion |
| Battery types | 12 V: WET; MF; Ca/Ca; AGM; EFB; GEL; LiFePO₄ |
| Battery capacity | 10-130 Ah |
| Battery capacity CEC-400 | 10-130 Ah |
| Battery voltage | 12 V |
| Reverse current draw* | Corresponds to less than 1.5 Ah/month |
| Operating ambient temperature | -30 ˚C to +50 ˚C |
| Cooling | natural convection |
| Initial voltage | Lead-acid battery types 1.5 V. 1.5 V LiFePO₄. |
| Frequency | 50 Hz |
| Ripple** | Less than 4% |
| Connectivity | BLUETOOTH® LE 5.1 |
| Temperature compensation | Built-in charging voltage compensation based on ambient temperature |
| Compliance | ETSI EN 300 328; RED; EN 61000-6-3; EN 61000-6-1; ETSI EN 301 489-1; ETSI EN 301 489-17; EN 60 335-2-29; EN 60335-1; SS-EN ISO 13732-1:2008 |
| Casing material | Plastic |
| Rated voltage (input) | 230 V |
| Protection class | IP65 |
| Power cord length (input) | 1.4 m |
| App support | CTEK app for Android and IOS |
| Dimensions (L x W x H) | 235 x 88 x 52 mm |
| Net weight (unit with cables) | 0.675 kg |
| Detachable charging cable length (output) | 2 m |
| Warranty | 5 years |
*) Reverse current is the current that drains the battery if the charger is not connected to the mains. CTEK chargers have a very low reverse current.
**) The quality of the charging voltage and charging current is very important. High current ripple heats the battery, causing the positive electrode to age. High voltage ripple can damage other equipment connected to the battery. CTEK battery chargers produce very clean voltage and current with low ripple.
Technical specification
AGM
Ca
EFB
GEL
LiFePO4
MF
WETbattery overcharge
overheating
reversed polarization
short circuit
sparking
