Can I charge a 4V battery with a 5V charger?

A LDO and a few resistors will do. There are many designs online. For example TI or AD or LT may have a suitable AN. You need a LDO that can work with 0.6V between input and output as a fully charged 4V lead acid battery will be 4.4V.

Can I use 12V charger for 4V battery?

Yes. Connect the batteries in series which means connect the positive and negative posts of the batteries with a jumper cable. you now have 12V battery which matches the output of the charger. The batteries do not have to be of the same capacity (AH) or in the same state of discharge.

What amp should I charge my lead acid battery?

We have the answer: 25\% of the battery capacity. The battery capacity is indicated by Ah (Ampere Hour). For example: In a 12V 45Ah Sealed Lead Acid Battery, the capacity is 45 Ah. So, the charging current should be no more than 11.25 Amps (to prevent thermal runaway and battery expiration).

What voltage is required to trickle charge a lead acid battery?

Minimum voltage Anything above 2.15 volts per cell will charge a lead acid battery, this is the voltage of the basic chemistry.

What is the maximum charging voltage for a 4 volt battery?

limit max V to: 4.55V (±1\%)

Can I charge 4 12v batteries in series?

One way to demonstrate a series-parallel circuit is to use four batteries with a single charger. Connect the positive output of the charger to the positive terminal of the first battery, and, then connect the battery’s positive terminal to the positive terminal of the second battery.

Can you overcharge lead acid battery?

Overcharging a lead acid battery can be just as harmful as undercharging it. If workers leave the battery in a continuously charging state for long periods of time, corrosion of the positive battery plates can occur. Lead acid batteries can also get very hot while charging.

What voltage do you charge a sealed lead acid battery?

To charge a sealed lead acid battery, a DC voltage between 2.30 volts per cell (float) and 2.45 volts per cell (fast) is applied to the terminals of the battery. Depending on the state of charge (SoC), the cell may temporarily be lower after discharge than the applied voltage.

What kind of battery charger can I use to charge my phone?

– You can use any Li-ion charger which is used to charge phone’s 3.7v Battery as they both are charged with a 4.2V DC. but if you still want to make one of your own… just go through this instructable. So this is for those who are new to Lead Acid batteries and about charging them , A cute Little 4V battery charger

What type of battery charger does power sonic recommend?

Power Sonic recommends you select a charger designed for the chemistry of your battery. This means we recommend using a sealed lead acid battery charger, like the the A-C series of SLA chargers from Power Sonic, when charging a sealed lead acid battery.

Can I charge a fully charged battery with discharged batteries?

Fully charged batteries should never be mixed with discharged batteries when charging batteries in series. The discharged batteries should be charged before connection. When a single constant voltage charger is connected across an entire high voltage string, the same current flows through all cells in the string.