Description

 D4 is a universal smart charger compatible with almost all cylindrical rechargeable batteries, thus eliminating the need to own several chargers. The D4 automatically detects Li-ion, Ni-MH and Ni-Cd batteries, and through manual selection is also capable of charging LiFePO4 batteries. Intelligent charging circuitry selects the optimal charging mode (CC, CV and dV/dt) for a given battery and each of the D4's four microcomputer-controlled charging slots then monitors and charges the battery independently. Furthermore, an integrated digital LCD screen clearly displays charging progress, voltage, current and time while an intelligent automatic power-off function terminates current when charging is complete. The D4: The world's most advanced fully-automatic digital charger. It's as simple as insert, detect and charge.

• Each of the four battery slots monitors and charges independently
• Compatible with and identifies Li-ion (26650, 22650, 18650, 1 7670, 18490, 17500, 18350, 16340(RCR123), 14500, 10440), Ni-MH and Ni-Cd (AA, AAA, AAAA, C) rechargeable batteries
• Optimized charging design for IMR batteries
• Integrated LCD panel clearly displays charging parameters and progress
• Two conveniently located side buttons allow easy selection of specific battery types and charging parameters
• Intelligent circuitry detects the battery type and status before entering automatic charge mode (CC, CV, dV/dt)
• Automatically detects battery power status and selects the appropriate voltage and charge mode (with the exception of LiFePO4 batteries which require manual selection)
• Compatible with LiFePO4 batteries
• Compatible with small capacity batteries
• Automatically stops charging when complete
• Features over-charge prevention to protect batteries
• Features temperature monitoring to prevent overheating
• Made from durable ABS (fire retardant / flame resistant)
• Features reverse polarity protection
• Designed for optimal heat dissipation

Shenzhen BaiSiYu TECHNOLOGY CO., LIMITED, established in 2009, is a professional battery supplier in Shenzhen, China, with around 50 employees and a factory area of above 1500 square meters.

We focus on designing, researching and developing, manufacturing and selling batteries, chargers, ecig mods, atomizers, ego case and so on.

Our main products are flashlight battery, chargers, battery packs in all fields such as e-bike, power tools, GPS, lighting and so forth. OEM/ODM orders are available with short delivery time.

With two experienced production lines who specialized in lithium ion batteries in more than 12 years and a professional sales team, together with strict Q/C procedure and relevant certifications such as ISO9001:2008, CB, CE and RoHS, our main markets expand with high speed including national market and foreign markets in Europe, America, Australia and Asia, ect.

Q1: How do we place an order?
A1: Please kindly send us an email specifying the item, quantity, color or other specification to place an order.
Q2: How do we make the payment?
A2: We accept Paypal, Western Union, TT,LC.
Q3: What's the delivery time?
A3: The delivery time is normally 3-7 working days after payment.
Q4: How would the goods be shipped?
A4: We ship via DHL, UPS, TNT and by sea normally. 
Q5: Is OEM/ODM available?
A5: Yes, it's available. For details, please kindly contact the sales persons.