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TELWIN T-CHARGE 20 12V/24V: Smart Charging for Maximum Battery Life.
Forget about flat battery problems. The TELWIN T-CHARGE 20 12V/24V is an advanced electronic, microprocessor-controlled charger that changes the way you look after batteries in your workshop, vehicle fleet or home garage. Developed by TELWIN's Italian experts, this compact but powerful charging and maintenance system stands for reliability and a longer service life for every lead-acid battery.
Picture the situation: a frosty morning and your key vehicle will not start. Or a customer is waiting to collect a car and the battery unexpectedly fails. With the T-CHARGE 20, such scenarios become a thing of the past. Thanks to the innovative PULSE TRONIC technology, the charger not only charges intelligently but also diagnoses the battery, recovers sulphated cells and keeps the battery in optimal condition over long periods. This is not an ordinary charger but your personal battery specialist, working 24/7.
Whether you manage a truck fleet, run a motorcycle workshop or are an enthusiast looking after your classic car, the T-CHARGE 20 adapts to your needs. Support for 12V and 24V batteries and for many battery types (WET, GEL, AGM, MF, PbCa, EFB) makes it an exceptionally versatile tool. Its compact design and intuitive operation make even the most advanced charging processes simple and safe.
The TELWIN T-CHARGE 20 is an investment that pays for itself quickly. You save time and avoid costly downtime and the replacement of batteries with new ones. You gain the certainty that your vehicles and equipment are always ready for work and that operations run smoothly and without disruption. Raise the standard of battery care in your workshop and trust a technology that professionals around the world rely on.
Discover the Advanced Capabilities of the TELWIN T-CHARGE 20 12V/24V
PULSE TRONIC Technology: Smart Care for Your Battery
The PULSE TRONIC system is a technology patented by TELWIN and forms the brain of the T-CHARGE 20 charger. This is not a simple, linear charging process. It is a dynamic, 8-stage cycle that adapts to the individual needs of each battery.
The first step is ANALYSIS, in which the charger checks the battery condition, its voltage and its ability to accept a charge. Next, if necessary, the RECOVERY (DESULPHATION) mode starts, using current pulses to dissolve lead sulphate crystals on the plates, which often brings older batteries back into working order. The main stage is the BULK CHARGE, charging at maximum current until about 80% of capacity is reached. It is followed by the ABSORPTION CHARGE, in which the current is gradually reduced and the voltage stabilised to charge the battery fully and safely to 100%.
The next stages are ANALYSE (checking again that the charge is held), FLOAT (maintenance charging that compensates for self-discharge) and PULSE (a special pulse maintenance mode that keeps the battery in optimal condition over the long term). For a professional, this means the certainty that every battery, regardless of its type or depth of discharge, is treated individually, which maximises its life and performance and eliminates the risk of damage.
Diagnostics and Recovery: A Second Life for Batteries
The TELWIN T-CHARGE 20 does more than charge: it is also an advanced diagnostic and recovery tool. Before the charging process starts, the unit carries out a preliminary analysis of the battery condition. A key function is RECOVERY, intended for batteries that have become sulphated after deep discharge or a long period of disuse. The T-CHARGE 20 sends precisely controlled high-voltage pulses that help break up the sulphate layer on the lead plates, restoring their active surface and their ability to store energy. In many cases this saves a battery that would otherwise seem ready for replacement.
In addition, the T-CHARGE 20 offers test functions. It lets you quickly check the battery charge level and, importantly for a mechanic, run an alternator performance test on the vehicle. This way you can quickly find out whether an undercharged battery is caused by the battery itself or by the charging system of the car. This all-round approach saves time and money and allows accurate diagnoses and effective repairs.
Uncompromising Safety and Adaptation to Conditions
Working with batteries requires particular care, which is why the TELWIN T-CHARGE 20 was designed for maximum safety of the user, the battery and the vehicle electronics. The unit is equipped with a set of protections: against reverse polarity (connecting the clamps the wrong way round), against short circuit (even if the clamps touch), against overload and against overheating of the charger itself. Importantly, it is a spark-free unit: it does not generate sparks when the clamps are connected to or disconnected from the battery, which is crucial when working near fuel vapours.
The IP65 degree of protection means that the housing is completely dust-tight and protected against water jets from any direction, so you can use it without concern in typical workshop conditions. In addition, the “COLD” function optimises the charging process at low ambient temperatures (e.g. below 5°C). Under such conditions the charging characteristics of lead-acid batteries change, and the T-CHARGE 20 adjusts the charging voltage to ensure a full and safe charge even when there is frost outside. The “SUPPLY” function, in turn, lets you use the charger as a stable 12V/24V power source, for example during battery replacement, which prevents the settings of the on-board computer and other electronic systems in modern vehicles from being reset.
Technical Specifications
| Parameter | Value |
|---|---|
| Brand | TELWIN |
| Model | T-CHARGE 20 12V/24V |
| Full Name | TELWIN T-CHARGE 20 12V/24V |
| Catalogue number | 807594 |
| EAN code | 8004897984551 |
| Supply voltage | 230V AC, 50/60Hz |
| Rated power | 110 W |
| Charging voltage | 12V / 24V (automatic or manual selection) |
| Effective charging current (12V) | 8 A |
| Effective charging current (24V) | 4 A |
| Minimum capacity of the battery being charged | 5 Ah |
| Maximum capacity of the battery being charged (12V) | 180 Ah |
| Maximum capacity of the battery being charged (24V) | 90 Ah |
| Number of charging stages (programs) | 8 (automatic, smart cycle) |
| Supported battery types | WET (flooded), GEL, AGM, MF (maintenance-free), PbCa (lead-calcium), EFB (Enhanced Flooded Battery) |
| Cold charging function (COLD) | Yes, for optimal charging at low temperatures |
| Recovery function (RECOVERY/DESULFATION) | Yes, for sulphated batteries |
| Test function | Yes (battery state of charge, cranking ability, alternator performance) |
| Power support function (SUPPLY) | Yes, stable power supply during battery replacement or diagnostics |
| Protections | Against reverse polarity, short circuit, overload, overcharging, sparks |
| Degree of protection | IP65 (resistance to dust and water jets) |
| Dimensions (L x W x H) | 170 x 65 x 35 mm |
| Weight | 0.6 kg |
Key Features and Benefits
- Smart PULSE TRONIC Charging Technology: This is the heart of the unit. The T-CHARGE 20 uses an advanced, microprocessor-controlled 8-stage charging process. The system continuously monitors the battery condition and adjusts the charging parameters (voltage, current, time) in real time. This covers analysis, pulse desulphation (RECOVERY), bulk charging, absorption, testing, pulse maintenance (PULSE) and float charging. For a professional, this means full automation, optimal charging of every battery type without the risk of overcharging, a significantly longer battery life and the recovery of even deeply discharged or slightly sulphated cells.
- 12V/24V Voltage Versatility and Broad Compatibility: The charger automatically detects the battery voltage or lets you select it manually (12V or 24V), which makes it an ideal tool for servicing many kinds of vehicles, from motorcycles and cars to vans, trucks, agricultural machinery and boats. It works with WET, GEL, AGM, MF, PbCa and EFB batteries. One charger covers almost all the needs of a workshop, which reduces the need for several specialised units and simplifies logistics.
- Advanced Diagnostic and Recovery Functions: The T-CHARGE 20 is more than a charger. It has a RECOVERY function that attempts to desulphate sulphated batteries and bring them back to life, often avoiding a costly replacement. In addition, the integrated tests let you quickly assess the battery state of charge, its cranking ability (CCA, depending on how the test function is interpreted) and the performance of the vehicle charging system (alternator). You gain a valuable diagnostic tool that saves time and makes your service decisions more accurate.
- Full Working Safety: The unit has a complete protection system: against reverse polarity (with indication), short circuit between the clamps, overload, overcharging and sparking during connection. The IP65 housing ensures resistance to dust and water. For the user, this means stress-free and safe work, even in demanding workshop conditions, with the battery, the vehicle electronics and the unit itself protected.
- Special Programs for Optimal Results: The T-CHARGE 20 offers dedicated programs such as “COLD” for efficient charging of batteries at low temperatures (crucial in winter for keeping full capacity) and the “SUPPLY” function, which keeps the vehicle electrical system powered during battery replacement. This prevents the loss of the on-board computer settings and of other electronic systems, an invaluable help in modern vehicles.
Product Applications
- Charging and maintaining batteries in cars and vans (12V/24V)
- Servicing batteries in motorcycles, scooters and quads (12V)
- Keeping batteries in agricultural and construction machinery in working order (12V/24V)
- Professional charging in truck and bus fleets (24V)
- Maintaining batteries in boats, campervans and caravans
- Diagnostic support and voltage backup in car workshops and service centres
- For demanding hobbyists looking after the batteries of seasonal and classic vehicles
Summary: TELWIN T-CHARGE 20 12V/24V, Your Best Investment
The TELWIN T-CHARGE 20 12V/24V is your reliable partner in caring for every battery. With smart PULSE TRONIC technology, advanced diagnostic and recovery functions and uncompromising safety, you can be sure that your batteries are always in excellent condition. Save time and money and avoid unexpected problems. Invest in a professional solution from TELWIN and get maximum performance and life from your batteries. Choose the T-CHARGE 20 and feel the difference.
Catalogue number: 807594
EAN code: 8004897984551
