Battery Tender 021-0123 Battery Tender Junior 12V

Battery Tender 021-0123 Battery Tender Junior 12V

The mentioned product has not only great specs but a complete 4-step charging program. This program protects the object from overcharging and creates conditions for battery power optimization. The visual review showed me that the creation appeared to be lightweight, very compact, and solid. It’s spark proof. Moreover, the wires come with a great weatherproof connector. The tender even fell on the floor, but such an accident didn’t have a negative impact on it. By the way, we wrote a useful article with best battery trickle charger review and want you to get acquainted with it.

Battery Tender Junior 021-0123 pros & cons:


  • The device has the ring terminal harness for permanent attachment to the battery.
  • When I accidentally touched both connectors there was no chance of a spark.
  • The battery tender has a computer inside, which analyzed the state and further operations (starting charging or not).


  • It was hard to figure out the meaning of the indicator’s color and behavior.