GEB Universal 4-Slot Smart LCD Battery Charger for 18650 21700 26650 Li-ion & NiMH
Professional 4-slot intelligent battery charger with backlit LCD display, independent channel control, auto-chemistry detection, and USB-C input for 18650, 21700, 26650 Li-ion and NiMH/NiCd cells.
B2B Engineering Review & Pricing
Direct manufacturer supply, custom BMS telemetry, and CAD fit validation for OEM/ODM projects.
Product Details
The GEB Universal 4-Slot Smart LCD Battery Charger for 18650 21700 26650 Li-ion & NiMH is an intelligent multi-chemistry desktop battery charger featuring four independent microcomputer-controlled charging slots with individual HD LCD telemetry. Delivering automated CC/CV charging currents up to 2.0A per slot, it auto-detects cell chemistries (Li-ion, LiFePO4, Ni-MH, Ni-CD) and incorporates hardware over-voltage, reverse polarity, short-circuit, and zero-volt activation safety safeguards.
Product Overview
The GEB Universal 4-Slot Smart LCD Battery Charger for 18650 21700 26650 Li-ion & NiMH is an engineered industrial solution featuring a 5V/2A or 9V/2A QC3.0 / USB-C Input (DC 1.48V / 4.20V / 3.65V Output) specification and 0.5A / 1.0A / 2.0A Selectable Charging Current per slot rating. Built with Grade-A components and precision micro-controller monitoring, this unit ensures high reliability, thermal dissipation, and consistent electrical performance across dynamic duty cycles. Encased in a V-0 flame-retardant PC/ABS casing with stainless steel sliding rails & high-contrast LCD screen measuring 160 × 105 × 38 mm (±1.0mm) and weighing Approx. 235g (charger unit), it is targeted for 18650, 21700, 26650, 18350, 14500 Li-ion / IMR / INR / LiFePO4 and AA, AAA, C NiMH/NiCd cells. Supports protected and button-top 21700 cells up to 75mm length. Displays real-time voltage, capacity, charging current, and elapsed time.
Product Specifications
| Feature / Attribute | Technical Specification |
|---|---|
| Input Power | 5V/2A or 9V/2A QC3.0 / USB-C Input (supports QC & PD adapters) |
| Output Voltage Ratings | DC 4.20V ± 0.03V (Li-ion) / DC 3.65V ± 0.03V (LiFePO4) / DC 1.48V ± 0.03V (NiMH/NiCd) |
| Charging Current per Slot | 0.5A / 1.0A / 2.0A Selectable (Max 2.0A single slot, or 4× 0.5A / 2× 1.0A simultaneous) |
| Enclosure & Housing | V-0 flame-retardant PC/ABS casing with stainless steel sliding rails & high-contrast LCD screen |
| Physical Dimensions & Weight | 160 × 105 × 38 mm (±1.0mm) / Approx. 235g (charger unit) |
| Target Compatible Batteries | 18650, 21700, 26650, 18350, 14500 Li-ion / IMR / INR / LiFePO4 and AA, AAA, C NiMH/NiCd cells |
| Standard Connectors / Terminals | USB Type-C input port (supports PD and QC adapters) |
| Hardware Protections | Reverse polarity, over-charge (-ΔV), short-circuit, over-current, and 0V soft-start recovery |
| Service Life / Endurance | ≥ 50,000 Operating Hours MTBF |
Technical Specifications
| Parameter | Value | Test Conditions & Engineering Tolerances |
|---|---|---|
| Nominal Input Voltage | 5V/2A or 9V/2A QC3.0 / USB-C Input | Standard USB QC3.0 / PD adapter load |
| Upper Voltage Threshold | 4.20V ± 0.03V (Li-ion), 3.65V (LiFePO4), 1.48V (NiMH) | CC/CV regulation tolerance ±0.03V–0.05V |
| Lower Cutoff / Protection | Automated -ΔV and timer safety cutoff | Automatic safety cutoff threshold |
| Standard Current Rating | Max 2.0A in single slot (or 4× 0.5A / 2× 1.0A simultaneous) | Continuous rated thermal equilibrium |
| Peak Surge Tolerance | Built-in 0V activation for over-discharged cells | Transient peak handling verification |
| Operating Temperature Range | -10°C to +50°C (Storage: -20°C to +60°C) | Ambient operational environmental range |
Equipment Compatibility & Engineering Fit Check
Before deploying GEB Universal 4-Slot Smart LCD Battery Charger for 18650 21700 26650 Li-ion & NiMH, verify these verified electrical and mechanical boundary requirements:
Operational Boundary Conditions
✔ Recommended Fit & Use Cases:
- Workshop, field, or production line operation within specified input electrical tolerances.
- Standard equipment environments requiring multi-tier thermal and short-circuit protections.
- Integrations requiring calibrated voltage regulation and industrial-grade MTBF endurance.
⚠ Operational Constraints & Limits:
- Do not exceed rated peak continuous load current without adequate forced air circulation.
- Avoid exposure to moisture or conductive dust beyond certified housing ingress ratings.
- Ensure connector polarity and pin assignment match system schematics prior to initial power-up.
First-Party Manufacturing SOP & Export Compliance
Technical Whitepapers & Engineering Guides
High-Performance Cylindrical Batteries: 16 Years of B2B Manufacturing
Technical breakdown of automated cell sorting, delta IR matching, laser welding busbars, and cycle aging protocols.
Industrial Cylindrical Batteries: QC, Aging and Test Standards
Key factory inspection criteria for cylindrical packs, thermal management, vibration testing, and BMS protection thresholds.
Cylindrical Battery Sourcing: Capacity and QC Verification Guide
How hardware engineers evaluate true C-rate capability, temperature rise curves, and Grade-A barcode traceability.
