This device is designed as a monolithic structure and combined with a plug for an AC outlet, made in a plastic case. On the upper surface, there are indicators of operation and charge level, highlighted by a green diode, and a button for changing the mode. The LST has 3 types of cords with different connectors: clips for battery terminals, round terminals, and extension cable that can be connected to both types of connectors.
Let’s start this review with its physical features – the battery tender has a water-resistant and durable cabinet. Besides, two additional mounting holes fix the device and help avoid mechanical damages.
Battery Tender Plus 021-0128 review deals with a high-end device that has two operating modes – float charging (is necessary when you’re too far from the battery) and full charge. The battery tender toggles between them automatically. More detailed information about the best trickle charger Battery Tender Plus 021-0128 is in our article.
In this review, I consider the LST charger, which has an output voltage of 12V with a current of 5A which are good specs for a miniature size. The intelligent battery charger designed for all types of lead-acid accumulators as well as AGM and GEL types of 12V batteries.
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.
First, I have to mention that the manufacturer did everything possible to make your charging safer and smarter. It has short circuit protection, over current, and reverse polarity protection.
During preparing this review I was really impressed that this charger maintains a quick disconnect harness. If you have already read our main article about the battery trickle charger, you probably know that most of the battery chargers usually don’t support this feature.
Chargers are intended only for gradual charging of the battery, their current output does not exceed 8 A. About the car battery, as a rule, remember the critical moment, when the battery refuses to crank the engine. When choosing the best charger you need to take into account many nuances. Every motorist should have in his arsenal a reliable car battery trickle charger, which in case of trouble can quickly bring the battery back to life.