CTEK MXS 5.0 Battery Charger and Maintainer
- 4.3 amp, 12 volt output
- Fully automatic charger and maintainer
- Lead acid and AGM batteries
- IP65 rating
- Comfort Connect clamps and eyelets included
- 5-year limited warranty
- 1.3 pounds
Last refreshed Sep 7, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.
A fully automatic charger and maintainer for lead acid and AGM batteries, with a weather-resistant IP65 rating and two connection options. Lithium compatibility is not listed.
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ASIN: B00CD44RQOModel: 40-206Category: Car Battery Chargers
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Overview
A garage or workshop where lead acid or AGM batteries need looking after gets a fully automatic charger that also maintains them. Comfort Connect clamps and eyelets attach it, and a drawstring bag stores the kit.
Automatic operation takes the guesswork out of charging, and the IP65 rating suits damp workshops. The included eyelets allow a permanent connection to a vehicle. The limitation is battery scope, since only lead acid and AGM are named and a long charge time is listed.
Who it's for
A garage with a seasonal vehicle or a workshop with several batteries. Look elsewhere for quick top-ups or for lithium chemistries, which the listing does not name.
Pros and cons
- Fully automatic operation
- Lead acid and AGM supported
- Clamps and eyelets included
- Storage bag included
- Lithium not listed
- Long charge time listed
- Cable length not stated
- Moderate charge current
Performance notes
Charge time depends on battery size and condition, and a current at this level works through larger batteries slowly. Automatic charging manages its own stages, while maintenance mode holds the battery topped up. IP65 means the case resists dust and water jets, which helps in damp garages.
Where it stands among car battery chargers
- #5 most-searched brand and model of the 14 car battery chargers lines we track (by search demand, not sales).
From the specs of the 23 car battery chargers we list; not a test result.
Specifications
| Brand | Ctek |
|---|---|
| Model | 40-206 |
| Dimensions & fit | |
| Item weight | 1.3 pounds |
| Item Dimensions D x W x H | 5.91 x 11.02 x 2.36 inches |
| Capacity & performance | |
| Output Voltage | 12 volts |
| Power & efficiency | |
| Amperage | 4.3 A |
| Battery Charge Time | 50 hours |
| Input Voltage | 120 volts |
| Compatibility & installation | |
| Compatible Devices | 12-volt lead acid and AGM batteries |
| Included components | |
| Included components | Charger, user guide, Comfort Connect clamps and eyelets, storage drawstring bag, 5-year limited warranty |
| Other details | |
| Connector Type Used on Cable | Alligator Clamps; Comfort Connect clamps and 13/32 inch eyelets |
| Specification Met | IP65 |
Closest rivals on specs
Battery Tender Plus 1.25A Battery Charger and Maintainer- Amperage 4.3 vs 1.25 amps (+244%)
- Item Weight 1.3 vs 1.5 pounds (-13%)
NOCO GENIUS1 1A Smart Battery Charger- Amperage 4.3 vs 1 amps (+330%)
- Item Weight 1.3 vs 0.95 pounds (+37%)
NOCO GENIUS2 2A Smart Battery Charger- Amperage 4.3 vs 2 amps (+115%)
- Input Voltage 120 vs 12 volts (+900%)
Frequently asked questions
What comes with the CTEK MXS 5.0?
The listing itemizes the charger, a user guide, Comfort Connect clamps and eyelets, a storage drawstring bag and a 5-year limited warranty.
Is the CTEK MXS 5.0 a jump starter?
No. It is an automatic charger and maintainer with a 4.3 amp output, not a source of starting current.