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UPG 12V 35Ah SLA U1 Battery vs U1 (35 Ah) 12 Volt UB12350 AGM Mobility Scooter & Power Chair Battery with Post Terminals

Both are the same battery: a 12V 35Ah sealed AGM U1 unit from Universal Power Group, sold under the UB12350 part number. The difference is the listing, not the product. Product B is the clearer buy for a mobility scooter or power chair, because its page confirms the L-shaped post terminals, the M6 insert terminals, the 22.5 lb weight and a 1-year replacement warranty, and its 18 ratings average 4.9. Product A's listing is muddled, mixing UPG and SigmasTek text and quoting 24.7 lb, so confirm the terminal type and weight before you order. For deep-cycle use in a wheelchair or scooter, either works; pick the one whose terminal style matches your old battery.

  • Choose the Universal Power Group UPG 12V 35Ah if you want the UPG-branded UB12350 and your tray takes nut-and-bolt top posts.
  • Choose the U1 35 Ah UB12350 if you are replacing batteries in a mobility scooter or power chair and want the L-shaped post terminals and new terminal screws in the box.

Prices

  • UPG 12V 35Ah SLA U1 Battery: $55.49 at Replacement Battery Store (last seen Nov 8)
  • U1 (35 Ah) 12 Volt UB12350 AGM Mobility Scooter & Power Chair Battery with Post Terminals: $59.99 at Amazon (checked today)
  • Difference: the UPG 12V 35Ah SLA U1 Battery is $4.50 cheaper than the U1 (35 Ah) 12 Volt UB12350 AGM Mobility Scooter & Power Chair Battery with Post Terminals at the latest prices (Nov 8 and Nov 11)
Universal Power Group
Universal Power Group UPG 12V 35Ah Sealed Lead Acid U1 Battery (UB12350)

UPG 12V 35Ah SLA U1 Battery

Universal Power Group UPG 12V 35Ah Sealed Lead Acid U1 Battery (UB12350)

4.3(6 ratings)
$55.49at Replacement Battery StoreChecked Nov 8
See all prices and details
Visit Replacement Battery Store
Pros
  • Genuine UPG UB12350 part number
  • Flame-resistant ABS case rated UL94 V-0
  • Self-discharge under 2% per month
  • Wide operating temperature range
  • Deep-cycle rated
Cons
  • Listing text describes a SigmasTek replacement, not the UPG battery
  • Heavier stated weight than B
  • No owner ratings shown
  • Terminal style may not match scooter harnesses
U
U1 (35 Ah) 12 Volt UB12350 AGM Mobility Scooter & Power Chair Battery with Post Terminals

U1 (35 Ah) 12 Volt UB12350 AGM Mobility Scooter & Power Chair Battery with Post Terminals

4.9(18 ratings)
$59.99at AmazonChecked 1 h ago
See all prices and details
Visit Amazon

Store links may earn us a commission. As an Amazon Associate, Deal.ai earns from qualifying purchases.

Pros
  • Clear UPG UB12350 identity
  • L-shaped post terminals suit most scooters and power chairs
  • New terminal screws included

What separates them

UPG 12V 35Ah SLA U1 BatteryU1 (35 Ah) 12 Volt UB12350 AGM Mobility Scooter & Power Chair Battery with Post Terminals
TerminalsNut and bolt, top postL-shaped post terminals with M6 insert terminals and new screws included
Stated weight24.7 lb22.5 lb
Brand clarityListing mixes UPG and SigmasTek textClear UPG UB12350 part number
Warranty1 year1 year full replacement
ChemistrySealed AGM, valve regulated, maintenance freeSealed AGM, spill-proof, maintenance free
Capacity and voltage12V, 35Ah, 320 CCA12V, 35Ah
Owner feedbackNo ratings shown4.9 out of 5 from 18 ratings
Stated life3 to 5 years in standby use3 to 5 years

Price history

$84.95$55.49
Nov 6Nov 11
  • UPG 12V 35Ah SLA U1 Battery: lowest $55.49 on Nov 9 at BatteryRush.com; $81.99 on Nov 10.
  • U1 (35 Ah) 12 Volt UB12350 AGM Mobility Scooter & Power Chair Battery with Post Terminals: lowest $59.99 on Nov 11 at Amazon.

Prices at every store

UPG 12V 35Ah SLA U1 Battery

  • Replacement Battery StoreNew

    In stock

    $55.49+ $25.20 shippingChecked Nov 8
    Visit Replacement Battery Store
  • WalmartNew

    In stockSold by eComelectronics

    $81.99Checked Nov 10
    Visit Walmart
  • BatteryRush.comNew

    Availability unknown

    $55.49Checked Nov 8
    Visit BatteryRush.com
  • AmazonNew

    Availability unknown

    As an Amazon Associate, Deal.ai earns from qualifying purchases.

    $84.85Free shippingChecked Nov 10
    Visit Amazon

Also available at

  • WalmartCheck price at Walmart
  • eBayCheck price at eBay

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All 16 stores and price history →

U1 (35 Ah) 12 Volt UB12350 AGM Mobility Scooter & Power Chair Battery with Post Terminals

  • Monster Scooter PartsNew

    In stockReturn policy

    $79.99Checked 1 h ago
    Visit Monster Scooter Parts
  • AmazonNew

    Availability unknown

    As an Amazon Associate, Deal.ai earns from qualifying purchases.

    $59.99+ $19.95 shippingChecked 1 h ago
    Visit Amazon
  • WalmartNew

    Availability unknownSold by eComelectronics

    $84.95Checked 1 h ago
    Visit Walmart
  • Ecom ElectronicsNew

    Availability unknown

    $84.99Checked 1 h ago
    Visit Ecom Electronics

Also available at

  • Monster Scooter PartsCheck price at Monster Scooter Parts

Store links may earn us a commission.

All 7 stores and price history →

Specs compared

SpecUPG 12V 35Ah SLA U1 BatteryU1 (35 Ah) 12 Volt UB12350 AGM Mobility Scooter & Power Chair Battery with Post Terminals
Weight24.70 lb22.50 Lbs
Battery ChemistryAbsorbent Glass Mat (AGM)sealed lead acid
Battery Capacity35 Ah—
Voltage12 V—
Amp Hours35 Ah—
CCA320 CCA—
Dimensions7.72 in (Length)—
Battery TypeAGM—
Battery Cycle LifeDeep Cycle Usage—
Battery MaterialLead—
Battery Self Discharge RateLess than 2% Per Month—
TerminalsNut & Bolt—
Show all 39 specsShow fewer specs
SpecUPG 12V 35Ah SLA U1 BatteryU1 (35 Ah) 12 Volt UB12350 AGM Mobility Scooter & Power Chair Battery with Post Terminals
Terminal LocationTop Post—
CompatibilityWheelchair—
Vehicle Brand CompatibilitySigmasTek—
Vehicle Model CompatibilitySp12-35—
Seal TypeSealed—
Case MaterialABS(UL94 V-0) Flame Resistant Case—
Venting TypeValve Regulated—
Operating Temperature RangeWide operating temperature range—
Shelf Life3-5 years (in standby use)

What reviewers say

UPG 12V 35Ah SLA U1 Battery

Owners of this class of UPG AGM battery generally report it holds charge well and fits standard U1 applications such as wheelchairs and jump boxes. Complaints tend to center on weight and on batteries that arrive undercharged or fade after a year or two of deep cycling.

What people mention
  • Battery lifeMixedSome owners get several seasons of use, while others report capacity fading within a year or two of deep cycling.
  • FitPraisedThe U1 case size and top-post terminals drop into standard wheelchair and jump-box trays.
  • WeightCriticisedAt about 24.7 lb it is awkward to lift, especially for mobility users swapping it themselves.
  • Charge retentionPraisedLow self-discharge means it holds charge during months of standby use.

U1 (35 Ah) 12 Volt UB12350 AGM Mobility Scooter & Power Chair Battery with Post Terminals

  • 4.9 / 518 ratings

Questions and answers

Are these the same battery?
Yes. Both are the UPG UB12350, a 12V 35Ah sealed AGM U1 battery. The listings differ in terminal description and stated weight, not in the underlying product.
Which fits a mobility scooter or power chair?
Product B, because it ships with L-shaped post terminals and new terminal screws, which is what most scooters and power chairs use. Check your old battery's terminal shape first.
Which lasts longer?
Both are rated 3 to 5 years. Real life depends on depth of discharge and charging habits. AGM batteries kept topped up and not run flat last longest.
Is one worth stepping up to?
There is no step up in performance; the cells are the same class. Pick by terminal fit and by which listing you trust. B's page is clearer and includes the screws.
Can I use one in a wheelchair?
Yes. Product A lists wheelchair compatibility and both are deep-cycle AGM. Confirm the terminal type and the compartment size before ordering.

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More comparisons

  • Universal Power Group UPG 12V 35Ah Sealed Lead Acid U1 Battery (UB12350) vs Mighty Max Battery Mighty Max 12V 35Ah Sealed Lead Acid U1 Battery (ML35-12)
  • Mighty Max Battery Mighty Max 12V 35Ah Sealed Lead Acid U1 Battery (ML35-12) vs U1 (35 Ah) 12 Volt UB12350 AGM Mobility Scooter & Power Chair Battery with Post Terminals
4.9 out of 5 from 18 ratings
  • DOT certified airline safe
  • Cons
    • Owners report screws can loosen and get lost
    • Battery compartment on some scooters is hard to open
    • Only 18 ratings so far
    —
    Suitable ForWheelchair—
    package_quantity1—
    size1 Pack—
    multipack_quantity1—
    colorBlack—
    Battery TechnologyLead-Acid—
    TypeBatteries—
    Power Max (Ah) (Ah)35.0—
    Battery Capacity (mAh)35000—
    BatteriesVehicle Battery, Other Batteries—
    Input Voltage (V)12.0—
    Nominal Voltage—12V
    Nominal Capacity—35Ah
    Terminal Type—M6 - Insert Terminals
    Length—195 mm (7.68")
    Width—130 mm (5.12")
    Height—155 mm (6.10")
    Life Expectancy—3-5 years