Battery Tender® 10 Bank, 4 AMP Selectable 12V / 6V Battery Charger

Ten vehicles. Ten independent charging circuits. Ten individual chemistry selectors. Ten individual voltage selectors. The Power Tender® 10-Bank 4 Amp is the fleet-scale solution for operations that maintain large numbers of vehicles with varied battery requirements — dealerships, rental operations, motorsports teams, service centers, and collector garages where ten batteries with different chemistries and voltages need simultaneous independent maintenance at full output.

Ten Independent Banks — Each Fully Configurable

Every bank on the Power Tender® 10-Bank has its own chemistry selector (lead-acid or Lithium) and its own voltage selector (6V or 12V). Each bank runs its own complete ISM (Infinite Sequential Monitoring™) cycle at full 4 Amp output, independent of every other bank. The configuration on Bank 1 has no effect on Bank 6. A bank in bulk charge does not reduce output to a bank in float maintenance. Ten batteries maintained simultaneously — each exactly as if it had its own dedicated Battery Tender® charger, with the correct chemistry and voltage profile for that specific battery.

ISM on All Ten Banks Simultaneously

Each of the ten banks independently runs the full 4-stage ISM algorithm at 4 Amp and the bank's selected voltage and chemistry:

• Initialization — Individual health check before current flows on each bank
• Bulk Charge — Full 4 Amp output at the selected voltage and chemistry restores capacity
• Absorption — Current tapers per bank as each battery approaches full charge
• Float Maintenance — Correct maintenance protocol for lead-acid or Lithium delivered 24/7, indefinitely, at the selected voltage

Compatible per bank: 14Ah to 100Ah at 6V or 12V. Lead-acid: flooded, AGM, gel cell, and sealed maintenance-free. Lithium: LiFePO4.

Fleet and Commercial Applications

• Powersports and motorcycle dealerships maintaining floor inventory with mixed lead-acid and Lithium batteries
• Rental operations with 10-unit fleet vehicles in overnight storage
• Motorsports teams maintaining race, practice, and support vehicle batteries across chemistry types
• Service centers with multiple customer vehicles in simultaneous storage
• Golf courses maintaining cart fleets alongside utility vehicles
• Collector garages with 10-vehicle mixed-chemistry and mixed-voltage collections
• Any commercial or institutional operation maintaining 10 batteries of varying chemistry and voltage simultaneously

One Unit vs. Ten

Ten individual Battery Tender® chargers maintain ten batteries with equivalent per-battery results — but require ten power outlets, ten wall units, ten sets of cables, and ten separate purchases. The Power Tender® 10-Bank delivers the same independent per-battery ISM performance from a single wall outlet, a single unit footprint, and ten dedicated output cables with per-bank chemistry and voltage configuration.

4 Amp Per Bank

At 4 Amp per bank, the Power Tender® 10-Bank charges and recovers batteries more than three times faster than a 1.25 Amp Plus per bank during bulk charging — for both lead-acid and Lithium chemistries — practical for operations where batteries need to be ready on a schedule.

Automatic Temperature Compensation

All ten banks automatically adjust charge voltage based on ambient temperature for lead-acid applications — each bank delivering the correct voltage to its battery regardless of storage conditions.

Safety Features

• Spark-proof connection on each bank — no current flows until polarity and connection are confirmed correct per bank
• Reverse polarity protection per bank — incorrect connection on one bank does not affect the remaining nine, protecting Lithium BMS systems across the fleet
• Short-circuit protection per bank — individual fault isolation across all ten banks
• ETL and CETL certified

ISM float maintenance on all ten banks prevents sulfation in lead-acid batteries and delivers the correct Lithium maintenance protocol simultaneously across the entire fleet. Battery life consistently extends from 2–3 years to 5 years or more on every battery connected.

3-Year Limited Warranty | DeLand, Florida Since 1965