Tekonsha Breakaway DC Charger, Accelerated Battery Charging Device (ABCD)Tekonsha$42.63Out of Stock
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For all 12v battery systems with a 4 Amp-hr minimum output. 2024-07 is designed to fit securely into the Breakaway Battery Cases. Temperature compensated design provides continuous recharge with automatic float mode feature to prevent overcharging. 1024/50-85-104 will return trailer breakaway system batteries to their maximum potential. Patent pending. 2025-09 features an automatic float mode to prevent overcharging. Ideal for seasonal storage and maintenance of recreational vehicles, motorcycles, snowmobiles, lawn tractors, and more.
| BRAND: | TEKONSHA |
| PART NUMBER: | 2024-07 |
| WARRANTY: | LIMITED 1 YEAR WARRANTY |
| WEIGHT: | 0.245 LBS |
| VOLTAGE: | 12 V |
| LENGTH: | 3.75 IN. |
Tekonsha is a leading manufacturer of electronic trailer brake controllers, pioneering the category in the 1970s. The lineup spans proportional units such as the Prodigy P3 and Prodigy iD, time-delayed controllers, the wireless Prodigy RF, plus vehicle-specific wiring harnesses, adapters and trailer brake components engineered for smooth, predictable stopping at any speed.
Tekonsha Engineering Company began in 1964 building RV steps and mirrors. Within a few years it had found its real calling, and by the 1970s Tekonsha was pioneering the manufacture of electronic trailer brake controllers, the product category that still defines the brand. More than half a century later it remains the reference name in trailer braking and is part of the Horizon Global group alongside Reese, Draw-Tite, Fulton, Bulldog and Wesbar.
A brake controller is the component that tells a trailer's electric brakes how hard to work and when, and getting that right is the difference between a controlled stop and a shove from behind. Tekonsha builds both major types. Proportional controllers use an internal accelerometer to sense how quickly the tow vehicle is slowing and apply trailer braking to match, so light braking stays light and hard braking is immediate. Time-delayed controllers ramp to a preset output over a fixed interval, a simpler and more economical approach that suits occasional towing.
The current brake controller range covers most of that ground. The Prodigy iD pairs with a phone through Tekonsha's EDGE technology for setup and monitoring, the P3 offers storable settings for multiple trailers and a trilingual colour LED display, the Prodigy P2 adds a dimmable display and boost mode for heavier loads, and the Voyager keeps operation simple and dependable. The Prodigy RF mounts to the trailer itself and controls wirelessly, which suits rental fleets and drivers who swap tow vehicles.
Installation is supported by vehicle-specific brake control harnesses that plug into a factory connector rather than requiring cut-and-splice wiring, along with mounting brackets and adapters. Matched controller bundles pair a unit with the correct harness. Products are tested to meet and often exceed published industry standards.
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The Tekonsha 2218 is a 12-volt sealed lead-acid battery system designed for trailer breakaway applications. It includes a 12V battery, charger (ABCD/Accelerated Battery Charging Device), battery box, and breakaway switch. The system is mounted on the trailer and activates trailer brakes if the trailer separates from the tow vehicle. The recommended charger is the Tekonsha 2024-07 Heavy Duty Multi Stage/Maintenance Charger.
Under normal operating conditions, the 12V sealed lead-acid battery has a service life of 4–5 years in standby applications, or 200–1000 charge/discharge cycles depending on depth of discharge and rate of charge.
The battery dimensions are: Length = 3.54", Width = 2.76", Height = 4.13". The terminals are Fasten Tab type, 0.187" × 0.032".
The kit includes the 12V sealed lead-acid battery, charger (ABCD), battery box, breakaway switch, and breakaway switch cable. The 1/4" bolt and lock nut (or 2 × 1/4" jam nuts) required to secure the breakaway switch bracket to the trailer frame are not included and must be supplied separately.
The manual specifies that all wire connections must be soldered, so soldering equipment is required. A wrench or socket set is needed to install the 1/4" bolt and nuts securing the breakaway switch bracket. The manual does not specify other tools required for installation.
The manual does not confirm whether a UV-resistant zip tie is included. However, it is required to secure the battery box cover to prevent accidental opening. Use one or both of the holes provided on the box.
No. The manual explicitly states to disconnect the trailer from the tow vehicle before installing the battery and charger into the battery case. The trailer must remain disconnected during the wiring phase.
Yes. Step 1 of the installation instructions states: Remove Charger and Battery from the battery case. The battery case is then mounted to the trailer frame, jack post, or other suitable location. The battery and charger are installed into the case after the breakaway switch is bolted in place.
Mount the battery case securely to the trailer frame, jack post, or other suitable location on the trailer. The breakaway switch cable should be oriented toward the tow vehicle. The manual does not specify a particular location but emphasizes that the mount must be secure and the switch location must ensure an unobstructed line of pull in the event of vehicle separation.
Attach the breakaway switch cable to the tow vehicle frame, ensuring the cable does not drag on the ground and no strain or restriction is placed on it. Do not hook the cable to the safety chain loop or hitch ball. The cable must have an unobstructed line of pull in the event of vehicle separation.
The negative (−) terminal must attach to ground. The positive (+) terminal must attach to the breakaway switch. Improper installation of polarity will destroy the brake control. All wire connections must be soldered.
Feed wires out the back of the battery case, then close the top. All connections must be properly insulated. All wire connections must be soldered.
No. Do not over-tighten the 1/4" bolt securing the breakaway switch bracket. The switch must be able to pivot freely. Over-tightening will restrict the switch's movement and prevent proper operation.
The maximum charge current must be limited to 1.2 amps or less. Exceeding this current will damage the battery and shorten its service life.
The battery terminals are Fasten Tab type, measuring 0.187" × 0.032".
The system uses red (+), black (−), blue, and white wires. Red connects to the +12V system and breakaway battery positive terminal. Black connects to ground and the negative terminal. Blue wires connect to the brake output from trailer brakes and brake control. White connects to the tow vehicle chassis ground. Refer to the schematic diagram in the manual for complete wiring details.
Yes. The manual states: "SAFETY ITEM: Solder all wire connections." This is a mandatory safety requirement for proper system operation and to prevent electrical failures.
Yes. To charge the breakaway battery only when the tow vehicle is running, a battery isolator may be installed in the 12-volt supply line (red wire for tow charger). This prevents the tow vehicle battery from being drained when the trailer is connected but the vehicle is not running.
Check the condition of the battery prior to each trip. The manual emphasizes this as a critical safety check to ensure the breakaway system will function properly if needed.
Batteries should not be stored at elevated ambient temperatures. Service life is shortened considerably at ambient temperatures above 30°C (86°F). Avoid exposing batteries to heat.
No. Batteries should not be stored in a discharged state. After six to nine months of storage, the battery should be recharged. Storing a discharged battery will shorten its service life.
No. Do not charge the battery in any other container besides the supplied battery box. Provide adequate air circulation when charging the battery.
If excessive discharging of the breakaway battery occurs, check the battery and recharge it using a Heavy Duty Multi Stage/Maintenance Charger. The Tekonsha charger 2024-07 is recommended for proper charging.
No. Do not attempt to disassemble the battery. Contact with sulfuric acid may cause harm. The battery is sealed and should not be opened.
Do not throw the battery into fire. Batteries disposed of in fire may rupture or explode, creating a serious hazard.
Yes. Fasten the battery tightly and make provisions for shock absorption if exposure to shock or vibration is likely. This prevents damage to the battery and ensures reliable operation.
No. Do not expose the battery case to organic solvents or adhesives. These substances can damage the battery case and compromise the battery's integrity.
No. Do not place the battery in close proximity to objects which can produce sparks or flames. This is a fire and explosion hazard.
Use a UV-resistant zip tie to secure the cover to the battery box using one or both of the holes provided. This prevents accidental opening of the battery box.
Check your breakaway system periodically to ensure that wiring and connections are secure. A short or an open circuit can result in a no-brake condition, which is a serious safety hazard.
For optimal performance, it is recommended that breakaway devices be replaced every 3–5 years.
The Tekonsha charger 2024-07 Heavy Duty Multi Stage/Maintenance Charger is recommended for proper charging of the breakaway battery. This charger is designed to charge the battery at the correct rate (1.2 amps maximum) and includes maintenance charging features.
If the secondary battery needs charging, current will be drawn from the tow vehicle's battery at any time the tow vehicle is connected to the trailer. The Tekonsha charger 2024-07 is recommended for proper charging. To prevent this, a battery isolator can be installed in the 12-volt supply line (red wire) so the breakaway battery charges only when the vehicle is running.
After six to nine months of storage, the battery should be recharged. Charge the battery at the proper rate with current limited to 1.2 amps or less. Use the Tekonsha charger 2024-07 Heavy Duty Multi Stage/Maintenance Charger. Provide adequate air circulation when charging and charge only in the supplied battery box.
Disconnect the trailer plug before testing the breakaway unit. Failure to do so will result in severe damage to the electronic brake control.
A short circuit or an open circuit in the breakaway system wiring or connections can result in a no-brake condition. Check the breakaway system periodically to ensure that wiring and connections are secure. If a no-brake condition occurs, inspect all connections and wiring for damage or corrosion.
The manual does not specify the causes of excessive battery discharge. If excessive discharging occurs, check the battery condition and recharge it using the Tekonsha charger 2024-07 Heavy Duty Multi Stage/Maintenance Charger. Consult the manufacturer for diagnosis of persistent discharge issues.
Improper installation of the breakaway battery polarity will destroy the brake control. The negative (−) terminal must attach to ground and the positive (+) terminal must attach to the breakaway switch. Verify polarity before powering the system.
The Tekonsha 2218 is a universal breakaway battery system designed to mount to the trailer frame, jack post, or other suitable location. The manual does not specify vehicle or trailer restrictions. Verify with the manufacturer or your trailer documentation for compatibility with your specific trailer model.
The 1/4" bolt and lock nut (or 2 × 1/4" jam nuts) required to secure the breakaway switch bracket are not included and must be supplied separately. A UV-resistant zip tie for the battery box cover is also not confirmed as included.
Yes. Disconnect the trailer from the tow vehicle before installing the battery and charger into the battery case. The trailer must remain disconnected during wiring.
The negative (−) terminal must attach to ground. The positive (+) terminal must attach to the breakaway switch. Improper polarity will destroy the brake control.
The maximum charge current must be limited to 1.2 amps or less. Exceeding this will damage the battery.
Check the condition of the battery prior to each trip to ensure the breakaway system will function properly.
For optimal performance, replace breakaway devices every 3–5 years.
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