![12V battery reads 4V, any tips on how to revive it? I got a 6V/12V F-705 Ferve charger at hand : r/batteries 12V battery reads 4V, any tips on how to revive it? I got a 6V/12V F-705 Ferve charger at hand : r/batteries](https://i.redd.it/1svomz7k1gf51.jpg)
12V battery reads 4V, any tips on how to revive it? I got a 6V/12V F-705 Ferve charger at hand : r/batteries
![Amazon.com: NEXPEAK 10-Amp Smart Fully Automatic Battery Charger, 12V and 24V, Maintainer Trickle Charger w/Temperature Compensation for Car Truck Motorcycle Lawn Mower Boat Marine Lead Acid Batteries : Automotive Amazon.com: NEXPEAK 10-Amp Smart Fully Automatic Battery Charger, 12V and 24V, Maintainer Trickle Charger w/Temperature Compensation for Car Truck Motorcycle Lawn Mower Boat Marine Lead Acid Batteries : Automotive](https://m.media-amazon.com/images/I/71oulu3eNiL.jpg)
Amazon.com: NEXPEAK 10-Amp Smart Fully Automatic Battery Charger, 12V and 24V, Maintainer Trickle Charger w/Temperature Compensation for Car Truck Motorcycle Lawn Mower Boat Marine Lead Acid Batteries : Automotive
![How can I tell if this is a standard lead-acid battery or AGM? To choose proper charging setting : r/MechanicAdvice How can I tell if this is a standard lead-acid battery or AGM? To choose proper charging setting : r/MechanicAdvice](https://preview.redd.it/how-can-i-tell-if-this-is-a-standard-lead-acid-battery-or-v0-dconf1z59cd91.jpg?width=3024&format=pjpg&auto=webp&s=55ecb05b49ef68dc6d6d51a69c22134f97485e58)
How can I tell if this is a standard lead-acid battery or AGM? To choose proper charging setting : r/MechanicAdvice
![how to should I charge completely dead car battery with this charger? My dad is out of town so he can't help me. Just wondering the safest way to do it? : how to should I charge completely dead car battery with this charger? My dad is out of town so he can't help me. Just wondering the safest way to do it? :](https://external-preview.redd.it/GYIYW_xofL0tYpQf3LSds6fCDFgpdRkH95a40Y3DmMQ.jpg?auto=webp&s=8b1e5101952ee9ce88b0c0e919289721d185d787)
how to should I charge completely dead car battery with this charger? My dad is out of town so he can't help me. Just wondering the safest way to do it? :
![NOCO 2000 Lithium. A must for any Sienna Hybrid owner when your 12V takes a crap on you. This will turn the car on in less than 1 second. : r/ToyotaSienna NOCO 2000 Lithium. A must for any Sienna Hybrid owner when your 12V takes a crap on you. This will turn the car on in less than 1 second. : r/ToyotaSienna](https://i.redd.it/3mdhk5y4fhca1.jpg)
NOCO 2000 Lithium. A must for any Sienna Hybrid owner when your 12V takes a crap on you. This will turn the car on in less than 1 second. : r/ToyotaSienna
![Old style Schumacher 12v battery charger went nuts after connecting (for a while) in reverse. Need help to know where to start. Now it just hums for a few seconds, then shutdowns. Old style Schumacher 12v battery charger went nuts after connecting (for a while) in reverse. Need help to know where to start. Now it just hums for a few seconds, then shutdowns.](https://i.redd.it/3ysgksmo6le61.jpg)
Old style Schumacher 12v battery charger went nuts after connecting (for a while) in reverse. Need help to know where to start. Now it just hums for a few seconds, then shutdowns.
![Blue foam on battery terminal? I opened up my hood and noticed this on my battery. Anyone know how to safely clean this at home? Do I need to get my battery Blue foam on battery terminal? I opened up my hood and noticed this on my battery. Anyone know how to safely clean this at home? Do I need to get my battery](https://preview.redd.it/2mvpg4tipeo61.jpg?width=640&crop=smart&auto=webp&s=3f9ee1b96f874486ed2b0ca72b9a187be40d36fa)
Blue foam on battery terminal? I opened up my hood and noticed this on my battery. Anyone know how to safely clean this at home? Do I need to get my battery
![Charging car battery with smart battery charger always shows 0.0V, what could be the issue? : r/MechanicAdvice Charging car battery with smart battery charger always shows 0.0V, what could be the issue? : r/MechanicAdvice](https://external-preview.redd.it/charging-car-battery-with-smart-battery-charger-always-v0-mBxYZEWOaKDNn6B7qatd9ZyAbTs_8jHgy1DaBIyxaZ4.jpg?auto=webp&s=d3b06981f8e52c87c3c5a382710572f2ae79391e)