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Deal.ai › Universal › Batteries & Chargers
Universal
Universal Powersonic PS-121000U 12 Volt, 100 AH Rechargeable Lead Acid Battery

Universal Powersonic PS-121000U 12 Volt, 100 AH Rechargeable Lead Acid Battery

Best price now

$349.99at Batteries PlusChecked Nov 9

Prices are checked against each store and labelled with when. Store links may earn us a commission. Price via Klarna.

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Price facts

  • Last seen at $349.99 at Batteries Plus on Nov 9.

Our take on the Universal Powersonic PS-121000U 12 Volt, 100 AH Rechargeable Lead Acid Battery

The Universal Powersonic PS-121000U is a sealed lead-acid battery rated 12 volts and 100 amp-hours, built for standby and deep-cycle duty. It is a heavy, spill-proof block aimed at UPS units, solar and off-grid banks, trolling motors, RVs and backup power rather than starting a car. Against lithium rivals it is cheaper per amp-hour and tolerant of float charging, but it weighs far more, delivers fewer usable cycles and must not be discharged flat. Owners treat it as a workhorse for backup and seasonal use, not a daily-cycle battery.

Best forUPS and backup power banksSolar and off-grid storageTrolling motors and RVsEmergency lighting and alarm panels
Pros
  • Sealed and spill-proof, safe to mount in most positions
  • 100 Ah at 12 V gives long runtime on light loads
  • Tolerates float and trickle charging well
  • Widely available and easy to replace
  • Works with standard lead-acid chargers
Cons
  • Very heavy, so it is awkward to move and install
  • Fewer usable cycles than lithium and shorter service life
  • Deep discharges shorten its life, so it needs a good charger
  • Cold weather cuts capacity noticeably
  • Not a drop-in starting battery for most cars

Universal Powersonic PS-121000U 12 Volt, 100 AH Rechargeable Lead Acid Battery prices at every store

  • Batteries PlusNew

    In stock

    $349.99Checked Nov 9
    Visit Batteries Plus

Store links may earn us a commission. Price via Klarna.

Universal Powersonic PS-121000U 12 Volt, 100 AH Rechargeable Lead Acid Battery price history

$349.99$349.99
Nov 9Nov 10

Lowest price we've seen: $349.99 on Nov 9 at Batteries Plus. Tracked across 1 store since Nov 9.

What reviewers say

Owners use it mainly for backup and off-grid duty and report it holds charge and runs light loads for long stretches. Complaints center on weight and on capacity fading when it is run down repeatedly.

What people mention
  • WeightCriticisedOwners say the battery is very heavy and hard to move or fit into tight spaces.
  • RuntimePraisedUsers report long runtimes on light loads such as routers, lights and small pumps.
  • Cycle lifeMixedSome say it lasts years on float charge, while others see capacity fade after deep cycling.
  • ChargingMixedIt works well with proper lead-acid chargers but suffers if left discharged or charged incorrectly.
  • BuildPraisedThe sealed case is described as solid and leak-free in indoor and outdoor setups.

Specifications

Battery Technology
Lead-AcidSource
Type
BatteriesSource
Power Max (Ah) (Ah)
100.0Source
Battery Capacity (mAh)
100000Source

Questions and answers

Can it be used as a car starting battery?
It is a deep-cycle standby battery, not a high-cranking starter. Use it for backup, solar or trolling motors, and keep a proper starting battery in the vehicle.
How far can it be discharged?
Keep it above roughly half charge for long life. Running it flat repeatedly cuts capacity and shortens service life.
What charger does it need?
A 12 V lead-acid charger with a float or maintenance mode. A smart charger that prevents overcharge and sulfation is best.
Can it be mounted on its side?
The sealed design allows most orientations, but keep the terminals up and protected. Avoid mounting where it can be knocked or shorted.
How does it compare with a lithium battery of the same rating?
Lithium is lighter and gives more usable cycles, while this lead-acid block is simpler and works with standard chargers. Choose it for standby duty, not daily deep cycling.
Is it safe indoors?
Sealed lead-acid is low-maintenance and spill-proof, but charge it in a ventilated area. Do not enclose it in a sealed box.
Where is the Universal Powersonic PS-121000U 12 Volt, 100 AH Rechargeable Lead Acid Battery cheapest?
At Batteries Plus, for $349.99, as of our latest check.

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CE MarkingSource
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Input Voltage (V)
12.0Source
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