Uploaded February 2024 | Updated September 2026, 2 weeks ago
The Yonhan Smart 12/24V Battery Charger, a versatile and inexpensive solution designed to keep your vehicle batteries charged and ready for action.
Automotive and utility batteries are expensive, but with the right care they can last many years. In this video I explain the biggest reasons why car, truck, motorcycle, and tractor batteries fail early, and how to prevent that from happening. Deep discharge cycles, neglect, and long periods of storage are battery killers, but with a proper smart charger you can dramatically extend battery life.
I compare brute force manual chargers with modern automatic chargers, explain why keeping a battery fully charged is essential, and demonstrate an inexpensive yet surprisingly powerful smart charger that costs under thirty dollars. This small unit provides computer-controlled multi-stage charging, winter and summer compensation, and even a pulse repair mode that can revive neglected batteries.
You will see exactly how the charger operates, what its different modes do, and how it maintains batteries without overcharging. If you want to protect your investment in batteries, this is a valuable tool to consider.
Subscribe if you enjoy practical guides on tools, repairs, and technology explained clearly.
Chapters:
00:00 Why batteries are expensive but often fail early
00:16 The hidden danger of deep discharges
00:38 Why lead acid works well for starting but not deep cycling
01:01 Why lithium may be a better option in some cases
01:08 How storage in a discharged state destroys batteries
01:35 The chemistry problem of sulfation explained
01:52 Two keys to battery longevity
02:07 Why every garage needs a battery charger
02:14 My heavy duty manual charger repair project
02:32 When brute force charging is useful and when it is not
02:39 Why I prefer automatic smart chargers for maintenance
02:58 The Bosch charger that let me down
03:19 Shopping for a premium replacement charger
03:38 Discovering a surprising budget alternative
03:59 Why I gambled on a $25 charger
04:31 First impressions of the small smart charger
04:46 Multi-stage computer controlled charging explained
05:02 Recovery mode that can bring dead batteries back
05:52 Real-world test on a semi-truck battery
06:12 What this charger is and is not designed for
06:22 How fast does a 10 amp charger really work
06:57 Features of the YongHeng 10A smart charger
07:12 The value of a smart charger at a low price
07:23 Automatic voltage detection and temperature sensing
07:44 Compatible with wet cell, AGM, and gel batteries
07:55 True maintenance mode vs dumb trickle chargers
08:25 How microprocessor control improves charging cycles
08:49 Seven-step charging process explained
09:43 Pulse repair mode that can rejuvenate old batteries
10:18 Why a 10 amp charger is the sweet spot for most people
10:52 Walkthrough of controls and display
11:18 Understanding the LCD readout and charge chart
11:42 Cooling fan, power cord, and clamp details
11:55 Best practice for connecting the charger safely
12:09 What the display shows when connected to a battery
12:21 Error messages and reverse polarity protection
12:50 Beginning a charge cycle and desulfation mode
13:28 Reading the bar graph during charging
13:47 The different charging modes explained
14:04 Standard automotive mode
14:10 AGM and gel battery mode
14:16 Small equipment battery mode
14:30 Motorcycle or maintenance mode explained in depth
15:40 Repair mode for neglected batteries
16:12 How the charger remembers your last mode
16:42 How full charge and off modes appear on display
17:15 Final takeaway: why a smart charger protects your investment
17:25 Not sponsored, just a good value find
17:34 Affiliate disclosure and thank you
17:49 Closing thoughts and invitation to subscribe
Highlighted features include precision charging with a backlit LCD that clearly displays charging and battery status. A built-in thermal sensor maintains optimal performance in any temperature, protecting against over or undercharging. The intelligent memory function adds convenience by recalling the last used mode.
It also offers an advanced repair function to rejuvenate old or idle batteries and extend life. Using high and low frequency pulse technology, this mode provides effective repair and activation, boosting performance.
Designed for lead-acid automotive, marine, and deep-cycle batteries, not for lithium.
Yonhan (Upgraded) 10 Amp Smart 12/24V Battery Charger for LiFePO4 + Lead Acid
amzn.to/4arWgQE
Yonhan 10 Amp Smart 12/24V Lead Acid type Battery Charger
amzn.to/3I1OTlr
Yonhan 20 Amp Smart 12/24V Battery Charger
amzn.to/487D4oJ
Production equipment I use or recommend:
barrywatson.com/recommended_equipment.html
These Amazon product links have no additional fees or surcharges.
Referral credit from qualifying purchases helps support this channel at no-cost to you.
The Yonhan Smart 12/24V Battery Charger, a versatile and inexpensive solution designed to keep your vehicle batteries charged and ready for action.
Automotive and utility batteries are expensive, but with the right care they can last many years. In this video I explain the biggest reasons why car, truck, motorcycle, and tractor batteries fail early, and how to prevent that from happening. Deep discharge cycles, neglect, and long periods of storage are battery killers, but with a proper smart charger you can dramatically extend battery life.
I compare brute force manual chargers with modern automatic chargers, explain why keeping a battery fully charged is essential, and demonstrate an inexpensive yet surprisingly powerful smart charger that costs under thirty dollars. This small unit provides computer-controlled multi-stage charging, winter and summer compensation, and even a pulse repair mode that can revive neglected batteries.
You will see exactly how the charger operates, what its different modes do, and how it maintains batteries without overcharging. If you want to protect your investment in batteries, this is a valuable tool to consider.
Subscribe if you enjoy practical guides on tools, repairs, and technology explained clearly.
Chapters:
00:00 Why batteries are expensive but often fail early
00:16 The hidden danger of deep discharges
00:38 Why lead acid works well for starting but not deep cycling
01:01 Why lithium may be a better option in some cases
01:08 How storage in a discharged state destroys batteries
01:35 The chemistry problem of sulfation explained
01:52 Two keys to battery longevity
02:07 Why every garage needs a battery charger
02:14 My heavy duty manual charger repair project
02:32 When brute force charging is useful and when it is not
02:39 Why I prefer automatic smart chargers for maintenance
02:58 The Bosch charger that let me down
03:19 Shopping for a premium replacement charger
03:38 Discovering a surprising budget alternative
03:59 Why I gambled on a $25 charger
04:31 First impressions of the small smart charger
04:46 Multi-stage computer controlled charging explained
05:02 Recovery mode that can bring dead batteries back
05:52 Real-world test on a semi-truck battery
06:12 What this charger is and is not designed for
06:22 How fast does a 10 amp charger really work
06:57 Features of the YongHeng 10A smart charger
07:12 The value of a smart charger at a low price
07:23 Automatic voltage detection and temperature sensing
07:44 Compatible with wet cell, AGM, and gel batteries
07:55 True maintenance mode vs dumb trickle chargers
08:25 How microprocessor control improves charging cycles
08:49 Seven-step charging process explained
09:43 Pulse repair mode that can rejuvenate old batteries
10:18 Why a 10 amp charger is the sweet spot for most people
10:52 Walkthrough of controls and display
11:18 Understanding the LCD readout and charge chart
11:42 Cooling fan, power cord, and clamp details
11:55 Best practice for connecting the charger safely
12:09 What the display shows when connected to a battery
12:21 Error messages and reverse polarity protection
12:50 Beginning a charge cycle and desulfation mode
13:28 Reading the bar graph during charging
13:47 The different charging modes explained
14:04 Standard automotive mode
14:10 AGM and gel battery mode
14:16 Small equipment battery mode
14:30 Motorcycle or maintenance mode explained in depth
15:40 Repair mode for neglected batteries
16:12 How the charger remembers your last mode
16:42 How full charge and off modes appear on display
17:15 Final takeaway: why a smart charger protects your investment
17:25 Not sponsored, just a good value find
17:34 Affiliate disclosure and thank you
17:49 Closing thoughts and invitation to subscribe
Highlighted features include precision charging with a backlit LCD that clearly displays charging and battery status. A built-in thermal sensor maintains optimal performance in any temperature, protecting against over or undercharging. The intelligent memory function adds convenience by recalling the last used mode.
It also offers an advanced repair function to rejuvenate old or idle batteries and extend life. Using high and low frequency pulse technology, this mode provides effective repair and activation, boosting performance.
Designed for lead-acid automotive, marine, and deep-cycle batteries, not for lithium.
Yonhan (Upgraded) 10 Amp Smart 12/24V Battery Charger for LiFePO4 + Lead Acid
amzn.to/4arWgQE
Yonhan 10 Amp Smart 12/24V Lead Acid type Battery Charger
amzn.to/3I1OTlr
Yonhan 20 Amp Smart 12/24V Battery Charger
amzn.to/487D4oJ
Production equipment I use or recommend:
barrywatson.com/recommended_equipment.html
These Amazon product links have no additional fees or surcharges.
Referral credit from qualifying purchases helps support this channel at no-cost to you.
