Baintech BT-36V-AC-10A/20A Variable Output Lithium Battery Charger – 36V System

Baintech BT-36V-AC-10A/20A delivers adjustable charging power for 36V lithium battery systems across marine, industrial and off-grid applications

The variable 10A-20A output allows operators to select charging speed based on battery capacity, time constraints and available AC supply capacity. This flexibility prevents overloading smaller generators while maximizing charge speed when mains power is available. Engineered specifically for lithium chemistry (LiFePO4 and LiMn2O4), the charger delivers precise CC/CV charging profiles that extend battery lifespan and prevent the overcharge damage caused by generic lead-acid chargers.

Designed for professional installations where one charger must handle different battery banks or charging scenarios. Workshop environments can charge smaller 36V tool batteries at 10A or bulk charge larger systems at 20A without investing in multiple dedicated chargers. The compact 330x150x75mm enclosure fits battery compartments, service vehicle shelving and marine electrical panels where space is limited.

Key Specifications

• Rated output voltage: 36V DC
• Variable output current: 10A-20A (adjustable)
• Maximum output power: 720W (at 20A setting)
• Input voltage: 240V AC (Australian mains)
• Battery chemistry: LiFePO4 and LiMn2O4 lithium batteries
• Charging profile: CC/CV (Constant Current/Constant Voltage)
• Dimensions: 330mm (L) x 150mm (W) x 75mm (H)

Features & Benefits

Variable Output Control: Adjustable 10A-20A charging current adapts to different battery capacities and charging scenarios. Use 10A for smaller battery banks or when connected to limited generator capacity, then switch to 20A for rapid bulk charging from mains power.

Lithium-Optimized Charging: Delivers precise CC/CV profiles engineered for LiFePO4 and LiMn2O4 chemistry, eliminating the float charge stage that degrades lithium cells. Prevents overcharge damage and thermal runaway risks associated with using lead-acid chargers on lithium batteries.

Generator-Friendly Operation: Lower 10A setting allows charging from portable generators with limited output capacity (1200-1500W range) without overloading. Critical for remote work sites and off-grid touring where generator capacity restricts accessory loads.

Compact Professional Enclosure: 330x150x75mm dimensions fit standard battery compartments, marine electrical panels and workshop shelving. Significantly smaller than multiple fixed-output chargers while delivering equivalent functionality through variable output.

Workshop Versatility: Single charger handles different 36V lithium battery systems in trade and service environments. Eliminates inventory of multiple fixed-output chargers and simplifies charging infrastructure across mixed battery fleets.

Maximum Power Delivery: 720W output at 20A setting provides rapid charging for larger 36V systems (200Ah+) when time constraints demand fast turnaround. Reduces downtime for commercial equipment and fleet vehicles relying on 36V lithium power.

Technical Specs

• Model: BT-36V-AC-10A/20A
• Rated output voltage: 36V DC
• Variable output current: 10A-20A (user-adjustable)
• Maximum output power: 720W (at 20A)
• Minimum output power: 360W (at 10A)
• Input voltage: 240V AC (50Hz Australian mains)
• Battery chemistry compatibility: LiFePO4, LiMn2O4
• Charging method: CC/CV (Constant Current/Constant Voltage)
• CC cutoff voltage (LiFePO4): 43.2V (typical for 36V systems)
• Float charging: None (lithium-optimized termination)
• Physical dimensions: 330mm x 150mm x 75mm

Compatible With / Goes Well With

• 36V LiFePO4 battery systems (50Ah-300Ah typical range)
• 36V LiMn2O4 lithium battery banks
• Workshop and trade 36V tool battery charging stations
• Industrial equipment with 36V lithium power supplies
• Electric vehicle 36V charging systems (golf carts, material handling)
• Off-grid solar battery storage (36V lithium)
• Marine 36V lithium house bank systems (dry installation locations)
• Service vehicle and fleet 36V battery charging infrastructure

Caution: Verify your battery system voltage matches 36V nominal before connection. This charger is not compatible with 12V, 24V or 48V systems.

Frequently Asked Questions

How do I select between 10A and 20A output?

The adjustment method is not specified in the supplied documentation. Contact F.A.E. for operational instructions on the variable output control mechanism (rotary dial, switch, or digital interface).

What size battery bank works best with each setting?

Use 10A for 36V batteries up to 100Ah (approximately 10-hour charge from empty). Use 20A for 100-300Ah banks where faster charging is needed. Larger banks benefit from 20A but will still require extended charge times.

Can this run from a generator?

Yes, at 10A setting the charger draws approximately 400-450W, suitable for 1500W+ portable generators. At 20A, expect 800-850W draw requiring 2000W+ generator capacity with headroom for surge.

Is this suitable for marine installations?

The charger includes standard electrical protection, but no waterproof rating is specified. For marine installations, mount in dry locations away from bilge water and spray. Consider the BT-36V-Waterproof model for exposed marine environments.

Does this work with 12V or 24V lithium batteries?

No, this charger is engineered specifically for 36V nominal systems. Using it on 12V or 24V batteries will result in severe overcharge damage. Verify your battery system voltage before connection.