MK Battery

U1 12V 35AH AGM Battery ( Sold in pairs )

Mobility Batteries
(Model No. MU-1 SLD M)

Starting at: $299.00 USD

Key Features

    • Sealed VRLA Design: 100% maintenance-free and spill-proof, requiring no periodic watering or acid checks.
    • Dual-Purpose Performance: Engineered to handle both deep cycle service and high rate discharge, making it ideal for mobility systems and engine starters.
    • Travel Approved: Rated as non-spillable by the DOT, IATA, and ICAO, allowing for safe transport on airplanes and public transit without special handling.
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MK Battery

Mobility Batteries
(Model No. MU-1 SLD M)

Starting at: $299.00 USD
$299.00
Shipping calculated at checkout.

Description
Specifications
Information

MK Battery MU-1 SLD M 12V 35Ah AGM Batteries, Pair

This listing supplies two MK Battery MU-1 SLD M batteries, each rated at 12 volts and 35 amp-hours. The sealed AGM construction is described for both cycling and high-rate discharge. This is the SLD M model, not the 32Ah MU-1 SLD A or the gel SLD G. The pair quantity does not establish the system's voltage or amp-hour capacity; that depends on how the equipment connects the batteries.

Confirm the Correct Model and Fit

Check the device maker's battery specification for the exact MU-1 SLD M model, chemistry and quantity. Compare the battery case, tray, terminal type and orientation, cable reach and hold-downs with the existing installation. Similar group labels or matching voltage do not make the SLD M, SLD A and gel versions interchangeable.

Charging, Storage and Transport

Use a charging profile approved for the equipment and AGM chemistry. MK describes the AGM version as sealed, valve-regulated and non-spillable. Transport classifications in the listing do not override current airline or carrier rules, so confirm packaging and acceptance with the specific carrier before travel. Follow the equipment manual for charging, wiring, polarity and storage.

Pair Quantity and Installation Service

The product is sold as a pair for equipment that specifies two batteries. Follow the device's wiring diagram; do not add the label capacities without accounting for series or parallel connections. Optional installation service is labor dispatch and battery installation only, is non-refundable and may require a distance-based fee. Confirm coverage before selecting it.

Before Ordering

Verify the MU-1 SLD M model, pair quantity, per-unit 12V/35Ah rating, AGM chemistry, terminal layout, tray fit and charger compatibility. Use this higher-capacity AGM option only when it matches the equipment maker's specification.

Specifications

  • Battery Type: AGM
  • Terminal Type: F4
  • Voltage: 12V
  • Amp Rating: 35 AH
  • Capacity at 5hr RATE 28.9AH
  • Capacity at 20hr RATE 35AH

Dimensions

  • Battery Weight: 24.44 lb
  • Battery Length: 7.76'
  • Battery Width: 5.16'
  • Battery Height: 7.09'

GEL vs. AGM Sealed Batteries

AGM (absorbed glass mat) is a special design glass mat designed to wick the battery electrolyte between the battery plates. AGM batteries contain only enough liquid to keep the mat wet with the electrolyte and if the battery is broken no free liquid is available to leak out.

Gel Cell batteries contain a silica type gel that the battery electrolyte is suspended in, this thick paste like material allows electrons to flow between plates but will not leak from the battery if the case is broken.

More often than not an AGM Batteries are mistakenly identified as a Gel Cell Batteries. Both batteries have similar traits; such as being non spillable, deep cycle, may be mounted in any position, low self discharge, safe for use in limited ventilation areas, and may be transported via Air or Ground safely without special handling.

AGM Batteries outsell Gel Cell by at least a 100 to 1. AGM is preferred when a high burst of amps may be required. In most cases recharge can be accomplished by using a good quality standard battery charger or engine alternator. The life expectancy; measured as cycle life or years remains excellent in most AGM batteries if the batteries are not discharged more than 60% between recharge.

Gel Cell Batteries are typically a bit more costly and do not offer the same power capacity as do the same physical size AGM battery. The Gel Cell excels in slow discharge rates and slightly higher ambient operating temperatures. One big issue with Gel Batteries that must be addressing is the CHARGE PROFILE. Gel Cell Batteries must be recharged correctly or the battery will suffer premature failure. The battery charger being used to recharge the battery(s) must be designed or adjustable for Gel Cell Batteries. If you are using an alternator to recharge a true Gel Cell a special regulator must be installed.

If you are unsure which battery or charger is best for your application, please call or email our tech people for help making the correct selection.
Ownership Information:

No product documentation available at this time.

Warranty Information:

12 Month Full Replacement Warranty with Receipt

Shipping / Returns Information:

No shipping/returns information available at this time.