What’s In Our Used Forklift Charger Inventory?
Our used forklift charger inventory includes refurbished units like 24V-80V SCR and high-frequency chargers from brands such as Grasen, Lester, and Crown. Each undergoes load testing, component replacement (e.g., diodes, capacitors), and software recalibration. Key features vary: SCR models suit heavy-duty cycles, while high-frequency units offer 90%+ efficiency. Chargers are categorized by voltage (24V, 36V, 48V, 80V), amperage (15A-100A), and connector types (Pigtail, Anderson SB). Pro Tip: Always verify charger output matches your battery’s voltage—mismatches risk cell degradation.
What charger types are in stock?
We stock SCR (Silicon Controlled Rectifier) and high-frequency chargers, plus hybrid models. SCR units dominate for their durability in multi-shift operations, while high-frequency chargers prioritize energy efficiency. Deep Dive: SCR chargers use transformer-based circuits for 30–80V outputs but achieve only 70–80% efficiency due to heat loss. High-frequency models replace transformers with inverters, cutting weight by 40% and improving efficiency. For example, a refurbished 48V 40A SCR charger can recharge a 600Ah forklift battery in 8 hours. However, their fan noise often exceeds 65dB—unsuitable for noise-sensitive facilities. Pro Tip: Opt for high-frequency if reducing cooling costs is critical.
| Type | Efficiency | Weight |
|---|---|---|
| SCR | 75% | 55 kg |
| High-Frequency | 92% | 32 kg |
Which brands are available?
Top brands include Grasen, Lester Electrical, and Delta-Q, with older Crown and Zeigler units for niche applications. Grasen chargers feature CAN-BUS communication for fleet monitoring, while Lester models offer sealed IP65 enclosures. Deep Dive: Lester’s Summit II series supports lithium-ion with adjustable charge curves—ideal for retrofits. Grasen’s MC series includes automatic equalization for flooded lead-acid. But older Crown CBC-25 units lack temperature compensation, risking overcharge in fluctuating environments. Pro Tip: Confirm communication protocols (CAN, RS485) match your fleet management system.
What voltage/amperage options exist?
Voltages span 24V (for walkie stackers) to 80V (heavy container handlers), with amperage from 15A (trickle) to 100A (fast charge). Common pairings include 48V/40A for 400–600Ah batteries. Deep Dive: Amperage dictates charge time—a 30% discharged 500Ah battery needs 10 hours at 50A. High-amperage chargers (80A+) require 240V outlets but cut downtime by 35%. Example: A 48V 80A charger refills a 700Ah pack in 6.5 hours. However, rapid charging above 0.2C accelerates lead-acid sulfation. Pro Tip: Limit fast charging to lithium-ion or opportunity-charging scenarios.
Are refurbished chargers tested for safety?
Yes—every unit undergoes dielectric withstand testing (HIPOT), ripple analysis (<5%), and thermal imaging. Capacitors are replaced if ESR exceeds 20% of spec. Deep Dive: We test at 110% load for 2 hours, monitoring voltage drift (±1.5% max). Failed units get MOSFET/IGBT replacements and firmware updates. For instance, a Lester 48V unit with >8% AC ripple gets a new rectifier bridge. Pro Tip: Request test reports showing ripple percentages and fan RPM consistency.
| Test | Standard | Tool |
|---|---|---|
| HIPOT | 1500V AC, 1 min | Megger MIT515 |
| Ripple | <5% of Vout | Fluke 435B |
Battery Expert Insight
FAQs
Only if retrofitted—most older SCR units lack lithium profiles. Confirm with sellers if chargers have adjustable voltage/current settings or CAN-BUS integration.
How to check charger-battery compatibility?
Match voltage (±5%), verify amp-hour rating (charger Ah ≤ battery’s 0.3C rate), and confirm connector polarity. Example: 600Ah battery needs ≤180A charger.
Do you offer charger-battery bundles?
Yes—ask about deals pairing 48V chargers with compatible 500–800Ah batteries, including pre-tested communication cables.