Este modelo de mantenedor y cargador de baterías es el más eficiente que he tenido desulfata, las baterías y las revive al 90%

This is an affordable, easy to use battery charger with a jump start feature. Both options work well. I mainly use the 3 amp trickle charge. The jump starter works well too if you need it. Good brand. I have had several and they last a long time.

Easy to use and works very good. It will get the job done.

Cumple con su función, es práctico, cuenta con 2 sistemas de carga, y te indica si la batería funciona, o si se encuentra dañada.

Lo compre enn2021 y había funcionado bien pero últimamente al cargar una bateria de gel con 15a empieza bien pero ya que llega al 7% el ventilador deja de funcionar y según sigue cargando pero no es así, y después de unos 4 o 5 minutos vuelve a prender y me marca que según empieza a cargar en 1% y pues total que mi camioneta no la pude arrancar, creo que se daño algún circuito qué no permite que la acrga sea continua en comparación con un trupper veo más robusto una carga de 20a o 25a tendré que cambiarlo pq asi no me sirve, mi uso fue relativamente constante, por lo menos 1 o 2 veces al mes. Confíe en la marca y me dejo en parte decepcionado, los materiales exteriores son buenos, lo malo es que la pantalla se apaga y no te permite ver constante el porcentaje de carga y el voltaje ⚡️ que mantiene la carga, otro punto malo.... suerte!

Excelente cargador lo he usado unas 3 ocasiones y es muy confiable, el acabado y materiales de calidad lo recomiendo

Muy buen producto y muy buena calidad

No se pudo cargar el contenido.

The Schumacher car battery charger is compact and easy to use. Since I’m not taking my car out as much and it’s very cold, I just plug it in at night and it’s ready for the morning. My car starts right away. I like it because I can use it myself and don’t have to bother anyone to give me a boost. Very happy with this product.

Practico y muy fácil de usar, lo indicadores de carga son de gran ayuda. Tenia la batería de la camioneta totalmente descargada y le dio carga sin problema

Very poor instructionsCharger trip my home circuit breakerwaiting for Amazon to pick up return itemNot recommended

las instrucciones de operación son claras y sencillas, una vez seleccionado, la carga de la batería inicia y el display muestra las condiciones iniciales de la batería hasta concluir el proceso de carga, realmente muy eficaz y practico. estoy muy satisfecho con el producto.

I am a practicing Electronic engineer with more than 20yrs experience. I did not know much about battery chargers until recently researching what a good modernd battery charger should do.MY SUMMARY 1st:I like this charger and think it does a good job for the PRICE (11-27-12). Gold box special was $25.25 + tax. (I would likely buy it at the regular price for $31.65)It's basically semi-automatic. You do have to set the current otherwise it will default to 2A. When I 1st used the charger the voltage defaulted to 12V. There is a button to select 6V or 12V. You won't damage anything if you reverse the clips accidently (I tried it intentionally). Compact size and reasonable quality clamps (not brass or brass plated though).It does not come with quick disconnect charge connector or maintainer cable to permanently install on your battery.Quiet: Mine has no humming or buzzing as another has noted. It does have a small fan that does not turn off, but you can barely hear it..This charger does what it is designed for. That is charge batteries big and small and top off or maintain batteries as needed.This works well as an maintenance charger for all batteries to keep them fully charged when not in use. After charge is complete the current shuts off and charger goes into maintenance mode where it monitors battery voltage and starts charging again when the battery drops below a preset level. (should be about 12.75V)I did check the charger current and shutoff for maintenance mode. (See detail below)The charger is relatively small, light weight and feels feels reasonably well built with medium weight plastic. The charger has a small cooling fan and does not get warm after charging at 6A. The battery clamps are not great but good enough.LED indicators: I really like the charge status lEDs for 25% 50%, 75% and 100% (or Charged)I gave this charger 4.5 stars because PRICE and performance is very good. Build quality is decent as well.Charging details:I discharged a car/truck jump start battery pack to 12.45V or approx 75% charge or 25% discharge.(Typical full charge is 12.7V to 12.75V. To discharge the battery I used a battery/alternator tester. I have a voltmeter attached to charger and a current meter in series with battery and battery charger negative terminal to measure charging current.I set the charge current to 6A1) At the start of the charge, the charge current was 4.2A. Charger indicated 25% charge2) After 30min the charge current was 3.61A. Charge voltage is 13.19V. Charger indicated 25% charge3) After 1 hour the charge current is 3.61A. Charge voltage is 13.38V. Charger indicated 25% charge4) After 1.5 hours the charge current is 2.84A. Charge voltage is 13.60V. Charger indicated 50% charge5) After 2 hours the charge current is 2.47A. Charge voltage is 13.95V. Charger indicated 50% chargeNote: that the charge current is decreasing as the battery is approaching full charge. This design feature will prevent overheating and extend the life of your battery.6) After 2.5 hours the charge current is 1.74A. Charge voltage is 14.63V. Charger indicated 75% charge7) After 3 hours the charge current is 0.33A. Charge voltage is 14.79V. Charger indicated 75% charge8) After 3.5 hours the charge current is 0.22A. Charge voltage is 14.80V. Charger indicated 75% charge9) After 3.75 hours the charge current is 0.0A. Charge voltage is 13.57V. Charger indicated 100% chargeCharger is now in the monitor mode/maintenance. In monitor mode the charger AC power is 7.5W measured with a Belkin Watt meter.Note that the charger did not charge at the set current of 6A. Apparently the battery was not low enough for a 6A charge rate.(My opinion) This charger did a good job of gently charging the battery especially when it was near full charge. The important thing to me is the charging current AUTOMATICALLY declined as the battery neared full charge. This prevents overcharging and truly tops off the battery to maximum capacity.I tested the battery the next day with a battery tester and it passed well within the "good battery" full charge limits. The results were much better than the charger that came with the battery pack where it tested NEAR "weak".Very happy with the purchase. I would buy this exact model again. Should there be any problem(s) in the future I will update this review.Ships from and sold by Amazon.Note 12-17-12: I just found out a friend of mine has been using this exact model for a few years to maintain his motorcycle batteries. He's happy with it. Never had a problem with it.