ZB 24V 2A Lead‑Acid Wheelchair Charger – purpose‑built for 24V lead‑acid battery packs (AGM, Gel, Flooded). With an output voltage range of 27.2‑29.6V and a constant current of 2A, this charger is optimized for battery capacities from 12Ah to 24Ah. It features a dedicated three‑stage charging algorithm (bulk‑absorption‑float) that prevents overcharge and water loss, extending battery life by up to 30% compared to generic chargers. Includes 12 interchangeable plugs, global safety certifications, and silent fanless design – ideal for electric wheelchairs, mobility scooters, and small electric vehicles.
One charger works worldwide – choose your plug at order.
3‑stage bulk‑absorption‑float, prevents overcharge & water loss.
Over‑current, over‑voltage, short‑circuit, reverse polarity, backflow, over‑temperature.
UL, CE, FCC, PSE, KC, CB, RoHS, IEC60601‑1, ISO7176‑31, UKCA.
Select Your Plug Type – Click any image to view full size
Technical Specifications
| Parameter | Value |
|---|---|
| Input Voltage | 100‑240V AC, 50/60Hz |
| Output Voltage (Lead‑Acid) | 27.2‑29.6V DC (bulk/absorption) |
| Output Current | 2A max |
| Recommended Battery Capacity | 12Ah – 24Ah |
| Efficiency | ≥90% |
| Pre‑charge (Trickle) Current | 1000±200mA (recovery for deeply discharged batteries) |
| Transition Current (to float) | 400±50mA (prevents overcharge) |
| Charging Stages | 3‑stage: Bulk → Absorption → Float |
| Cooling | Natural convection – fanless, silent |
| Housing Material | PC plastic, fire‑retardant |
| Dimensions (L×W×H) | 155×74×32mm |
| Net Weight | 465±5g |
| Output Connector | 3‑pin XLR male, 1200mm cable |
| Input Cord Lengths | US 1800mm, others 1300mm |
| Withstand Voltage | 4KV |
| Packing (Master Carton) | 25 pcs/carton (460×340×370mm) |
Fig.1: Dimensions for 2A/3A models (155×74×32mm)
Fig.2: Output connector – 3-pin XLR male, 1200mm cable
Lead‑Acid Specific 3‑Stage Charging Algorithm
Unlike lithium chargers, lead‑acid batteries require a precise voltage‑limited charge profile. Our ZB 24V 2A Lead‑Acid Charger implements the industry‑standard bulk → absorption → float sequence:
- Bulk stage – constant current 2A is delivered until the battery voltage reaches the absorption setpoint (around 28.8‑29.2V). This restores about 80‑90% of capacity.
- Absorption stage – constant voltage (27.2‑29.6V) with decreasing current. The current gradually drops to the 400±50mA transition threshold, then the charger switches to float.
- Float stage – maintains a lower constant voltage (≈27.2V) to keep the battery fully charged without overcharging, preventing water loss and grid corrosion – the two main causes of lead‑acid battery failure.
For deeply discharged batteries (voltage below 20V), the charger enters a trickle pre‑charge at 1000±200mA to safely raise the voltage before entering the bulk stage. This feature rescues batteries that have been left discharged for extended periods.
With proper charging, the lifespan of your wheelchair’s lead‑acid battery can be extended by 20‑30% compared to using a non‑optimized charger.
Six‑Layer Protection System
- Over‑current protection – automatically limits output when current exceeds 2A threshold.
- Over‑voltage protection – stops charging when voltage exceeds 30V to avoid battery damage.
- Short‑circuit protection – instant output shutdown in case of accidental short.
- Reverse polarity protection – no output when battery is connected backwards; both charger and battery remain safe.
- Backflow / anti‑reverse current protection – prevents battery voltage from feeding back into the charger.
- Over‑temperature protection – reduces power or shuts down when internal temperature exceeds safe limit.
Global Certifications & Compliance
Our charger holds multiple international certificates: UL, CE, FCC, PSE, KC, CB, RoHS, IEC 60601‑1, ISO 7176‑31, and UKCA (for UK plug version). These ensure safe operation and compliance with wheelchair electrical standards, simplifying import and resale.
Application & B2B Information
Ideal for: Electric wheelchairs, mobility scooters, floor scrubbers, and small electric vehicles using 24V lead‑acid batteries (AGM, Gel, or Flooded) with capacity 12Ah‑24Ah. The 2A charge rate is gentle enough for daily use, maximizing battery cycle life (typically 300‑500 cycles).
Wholesale & Customization: Minimum Order Quantity (MOQ) is 25 pieces per type (mixed plug types allowed). OEM services include custom logo, packaging, and label language (English / Japanese / UKCA). Sample orders supported. Delivery: 15‑25 days after payment confirmation.
12‑Month Hassle‑Free Warranty: If any unit fails due to manufacturing defect within warranty, provide a short video or photo as proof. We will credit the failed quantity on your next order – no need to return defective units, saving you return shipping costs.
Nameplate languages: English, Japanese, or UKCA marked labels are available upon request.
Shipping & Packing: Each charger includes selected input power cord, output XLR cable, and user manual. Master carton contains 25 units (460×340×370mm).
Lead‑Acid Battery Maintenance Tips
- Recharge the battery as soon as possible after each use – never leave it deeply discharged for long periods.
- Use the correct charger (this one!) – generic car battery chargers may not have the proper absorption voltage.
- Keep terminals clean and tight; corrosion can reduce charging efficiency.
- Store batteries in a cool, dry place; high temperatures accelerate water loss.
