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Deltran Power Tender 10-Bank 021-0134 battery charger, front view showing all ten bank outputs
Power Tender 10-Bank 4 amp 12V/6V charger, 2026 studio photo
10 bank battery charger from Deltran photographed with its output leads
Per-bank 6V/12V voltage and lead-acid/lithium chemistry selectors on the Power Tender 10-Bank
Power Tender 10-Bank charger in a shop and fleet setting
Ten-bank battery maintainer keeping stored vehicles charged in a storage facility
Deltran 10-Bank charger used across automotive, marine and powersports batteries
Ten batteries charging at once on the Deltran Power Tender 10-Bank
Deltran Power Tender 10-Bank 021-0134 battery charger, front view showing all ten bank outputs
Power Tender 10-Bank 4 amp 12V/6V charger, 2026 studio photo
10 bank battery charger from Deltran photographed with its output leads
Per-bank 6V/12V voltage and lead-acid/lithium chemistry selectors on the Power Tender 10-Bank
Power Tender 10-Bank charger in a shop and fleet setting
Ten-bank battery maintainer keeping stored vehicles charged in a storage facility
Deltran 10-Bank charger used across automotive, marine and powersports batteries
Ten batteries charging at once on the Deltran Power Tender 10-Bank

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Deltran Battery Tender Power Tender 10-Bank 021-0134 - 12V/6V 4A Selectable Battery Charger

$749.95
$680.00
SKU: C40
UPC: 734357113419
Availability: Shipping Lead Time is 24 to 48 Hours
Shipping: Free shipping on orders $75 and up
Type: Battery Charger
Charge Rate: 4A
Battery Capacity Range: Up to 30AH, 32AH, 40AH, 60AH, 70AH, 100AH
Charging Modes: 12V Lead Acid, 12V AGM, 12V GEL, 12V Lithium
Charging Modes: 6V Lead Acid, 6V AGM, 6V GEL
# Of Charging Banks: 10
Deltran Battery Tender Power Tender 10-Bank 021-0134 - 12V/6V 4A Selectable Battery Charger

Deltran Battery Tender Power Tender 10-Bank 021-0134 - 12V/6V 4A Selectable Battery Charger

$749.95
$680.00

Out of stock

Description  

Deltran Battery Tender Power Tender 10-Bank 021-0134 - 12V/6V 4A Selectable Battery Charger

Ten batteries on a showroom floor, ten different states of charge, one wall outlet: the Deltran Power Tender 10-Bank 021-0134 is a 10 bank battery charger that gives every one of them its own 4 amp circuit. Every bank carries two switches, one for chemistry (lead-acid or LiFePO4) and one for voltage (6V or 12V), and what you set on bank three has no bearing on bank seven. Deltran moved its selectable multi-bank chargers to the Power Tender name; this is the unit we listed as the Battery Tender 10-Bank, same 021-0134 part number, rated for 14Ah to 100Ah on each bank.

Warranty

Warranty. Deltran, the manufacturer, warrants the 021-0134 for three years. The written terms arrive with your order confirmation, and we take the first call on any claim.

Ten Banks, Each Its Own Charger

Chemistry and voltage set per bank
Flip bank one to 12V lithium and bank two to 6V lead-acid and both run the correct four-stage program. There is no master switch forcing every battery into one profile.
4 amps where a Plus gives 1.25
In bulk charge each bank pushes better than three times the current of a Battery Tender Plus, so a battery drained by a weekend of demo rides comes back the same day.
Temperature compensation, bank by bank
Float voltage on every lead-acid bank tracks its own temperature reading, which matters when half the fleet sits by the bay door and half by the furnace.
  • Spark-proof outputs on all ten banks - nothing at the clamps until a battery is connected
  • Reverse polarity protection per bank - protects a lithium battery's BMS, and a mistake on one bank leaves the other nine charging
  • Short-circuit protection per bank
  • 25-hour safety timer - a bank that cannot finish its cycle times out instead of running forever
  • ETL and cETL certified

Technical Specifications

Deltran Power Tender 10-Bank 021-0134 Specifications
Part Number021-0134-DL-WH (also searched as 021-0134, 021 0134, 0210134, Battery Tender 10-Bank, Power Tender 10 Bank). Our SKU C40
Charger TypeTen independent fully automatic four-stage chargers, selectable per bank
DC Output Voltage6V or 12V, switch-selected on each bank
Charge Current4 amps per bank
AC Input120 VAC, 60 Hz, 700 W
Charge StagesInitialization, bulk, absorption, float maintenance, run separately on every bank
Battery TypesLead-acid (flooded, AGM, gel, sealed maintenance-free) or LiFePO4, switch-selected on each bank
Battery Size14Ah to 100Ah per bank
Output LeadsTen dedicated output cables, 10 in from the housing, each with a 7 ft accessory lead and battery clamps
AC Cord6 ft
ProtectionsSpark-proof, reverse polarity, short-circuit, on each bank; 25-hour safety timer
Temperature CompensationAutomatic on each bank in lead-acid mode
Max Operating Temperature50°C (122°F)
Weight13 lbs
StandardsETL, cETL
Warranty3 years (Deltran)

Where This Charger Is Used

  • Powersports and motorcycle dealerships - lead-acid and lithium floor stock on one unit, each bank set for the bike it feeds
  • Rental and tour fleets - ten machines back on the charger at close, ten ready at open
  • Golf course cart barns - 6V and 12V utility vehicles maintained side by side
  • Ten-vehicle collections - pre-war 6V cars next to 12V muscle cars, no charger swapping
Five batteries, not ten? → The Power Tender 5-Bank 021-0133 has the same per-bank chemistry and voltage switches with half the leads.

Ordering and Shipping

Ships parcel, free on orders over $75, which this unit clears on its own. Sizing note: if every battery you own is 12V lead-acid and only needs maintaining, the 4-Bank or a set of Plus chargers costs less; the 10-Bank earns its price when the fleet is mixed or when 4 amps of recovery per bank matters. For dealer and fleet quantities, send the count and your delivery ZIP and a battery specialist returns a written quote in 24 to 48 hours.

Frequently Asked Questions

Who covers the warranty on the Power Tender 10-Bank, and for how long?

Deltran, as the manufacturer, for three years. Keep the order confirmation with the unit, and if a bank fails, contact us and we will handle the claim with Deltran on your behalf.

Is the Power Tender 10-Bank a different product from the Battery Tender 10-Bank?

Same charger, new family name. Deltran now groups its selectable multi-chemistry chargers under Power Tender, and the 10-Bank kept the 021-0134 part number through the change. If you are adding to a Battery Tender 10-Bank you already run, this is the matching unit.

Can it charge 6-volt and 12-volt batteries at the same time?

Yes. Voltage is set bank by bank, so bank one can sit at 6V on an antique while bank two runs 12V on a truck. Check each bank's switches against the battery before you clip on; a 12V setting will overcharge a 6V battery.

How much faster is 4 amps per bank than a Battery Tender Plus?

The Plus delivers 1.25 amps. A 50Ah battery at half charge needs roughly 25 amp-hours back, which is about six hours of bulk charging at 4 amps against twenty at 1.25 amps, before the taper at the end. That is the difference between a battery ready by lunch and one ready tomorrow.

Does it need a dedicated circuit?

No. It draws up to 700 watts from a 120 volt outlet, under 6 amps, so a standard 15 amp garage circuit handles it. Give it its own outlet rather than sharing one with a compressor.

Ten banks is a fleet decision. Get it right before it ships.

Send a list of the batteries it will feed (voltage, chemistry, amp-hours) and a battery specialist confirms in writing that each one fits a bank, in 24 to 48 hours, with no obligation to buy.

Call 1-877-775-4381  ·  battery specialists, not a call center
Warranty Information  
3-Year Deltran Manufacturer Warranty
Shipping & Returns  

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