Dual-Level Float-Cum-Boost Charger with Pre-Charge for 12V – 3 to 6Ah Sealed Lead Acid (SLA) Batteries
https://www.electronics-lab.com/dual-level-float-cum-boost-charger-with-pre-charge-for-12v-3-to-6ah-sealed-lead-acid-sla-batteries/
This SLA Battery charger project is the right choice if you want to obtain maximum battery service life and capacity, along with acceptable recharge time and economy, constant current, constant voltage, and even charge a deeply discharged battery. The project contains all the necessary circuitry to optimally control the charging of valve-regulated lead-acid batteries. The […]
TinyCharger – Single Cell Li-Ion Battery Charger with Monitoring
https://www.electronics-lab.com/tinycharger-single-cell-li-ion-battery-charger-with-monitoring/
TinyCharger is an ATtiny25/45/85-based, single-cell Li-ion battery charger with selectable charging current limit (100mA – 1000mA) and an OLED display for monitoring. For battery charging the TP4056 is used. The TP4056 is a complete constant-current/constant-voltage linear charger for single cell lithium-ion batteries. The maximum charge voltage is fixed at 4.2V and the charge current can […]
Photovoltaic Cell Battery Charger / Solar Cell Li-Ion Battery Trickle Charger with MPPC
https://www.electronics-lab.com/photovoltaic-cell-battery-charger-solar-cell-li-ion-battery-trickle-charger-with-mppc/
This is a tiny module that allows users to charge small Li-ion batteries, CR2032 or equivalent, from a low power source such as a small photovoltaic cell. The project consists of the LTC3105 step-up DC-DC converter chip which features Maximum Power Point Control (MPPC) and 250mV start-up voltage which enables operational directly from low power, […]
Four ports Intelligent and High powered charger USB charger
https://www.electronics-lab.com/four-ports-intelligent-high-powered-charger-usb-charger/
The more the electronic devices to charge, the more the multiple-port USB chargers to have, especially intelligent ones! Yes, charging multiple devices at the same time can be very tiring; from having to deal with the mess of the plenty of cables and adapters needed for the different devices to hunting for free wall sockets […]
Let Ugreen all-in-one 4-Port 65W GaN fast charger solve all your worries
https://www.electronics-lab.com/let-ugreen-one-4-port-65w-gan-fast-charger-solve-worries/
Highlights: Essential for Travel/Office/Home One charger solves all the troubles. No need to bring multiple charging adapters when travelling; No worries about the large size of the traditional multi-port charger, which is not convenient for carrying. Work easily, no longer need to equip each device with a different charger, make the desktop clean and tidy, […]
12V SLA Lead Acid Battery Charger Using BQ24450
https://www.electronics-lab.com/12v-sla-lead-acid-battery-charger-using-bq24450/
This project has been developed to charge SLA (Lead Acid Batteries). It helps to charge 12V Lead-acid battery up to 12Ah in capacity. The specific current output is possible by altering the current sense resistor. The BQ24450 chip contains all the necessary circuitry to optimally control the charging of valve-regulated lead-acid batteries. The IC controls […]
MPPT charge controller reference design for 12- and 24-V solar panels
https://www.electronics-lab.com/mppt-charge-controller-reference-design-12-24-v-solar-panels/
This reference design is a Maximum Power Point Tracking (MPPT) solar charge controller for 12-V and 24-V solar panels. This compact reference design targets small and medium power solar charger solutions and is capable of operating with 15- to 60-V solar panel modules, 12- or 24-V batteries and providing upwards of 20 A output current. […]
In and out with 10-minute electrical vehicle recharge
https://www.electronics-lab.com/10-minute-electrical-vehicle-recharge/
Researchers at Penn State have developed a fast charging technique to charge a battery in in electric vehicle in just ten minutes. By Nick Flaherty @ www.eenewspower.com The fast charging technique uses a self-heating battery design to provide faster charging at 60ºC, while cooling the rest of the system to make sure that the battery […]
Lithium Coin Cell Charger for Rechargeable Coin Batteries
https://www.electronics-lab.com/lithium-coin-cell-charger-rechargeable-cr2016-cr2025-cr2032-coin-batteries/
This versatile charger has been designed to charge Lithium Coin Cell Rechargeable CR2016/CR2025/CR2032 Coin Batteries. Just insert the battery to the holder, and plug in to any USB port to recharge, D3 Power LED, D1 LED indicates the charge cycle. The board has been designed to use dual chips, either BQ21040 IC from Texas instruments […]
BQ25619 I2C-Controlled 1.5 A Single-Cell Buck Battery Charger
https://www.electronics-lab.com/bq25619-i2c-controlled-1-5-single-cell-buck-battery-charger/
Texas Instruments’ power-path management solution features 20 mA termination and 1 A boost operation Texas Instruments’ BQ25619 integrates charge, a boost converter, and voltage protection in a single device. It offers ultra-low termination current for switching chargers to charge wearable devices by full-battery capacity. The BQ25619 low quiescent current reduces battery leakage to 6 µA […]