Q-Battery

Q-Battery 12LS-33 · UPS battery 12V 35Ah

Reference: BOL-QBATTERY-12LS-33

The Q-Battery 12LS-33 is an UPS battery with 12 V and 35 Ah, measuring 195 × 130 × 159 mm.

Who the Q-Battery 12LS-33 is for

The Q-Battery 12LS-33 is a VRLA AGM battery for UPS and uninterruptible power systems: it stays charged for years waiting for an outage and delivers the energy instantly when it comes. Before ordering the 12LS-33, check the terminal type and terminal orientation in your UPS.

The 12LS-33 belongs to the Q-Battery AGM STANDARD range. The full range of Q-Battery batteries

AGM technology in the 12LS-33

The 12LS-33 is AGM: the electrolyte is absorbed in glass fibre mats, so it is sealed and spill-proof. Being sealed, the 12LS-33 can be fitted in the boot or under a seat with no risk of spills.

Q-Battery 12LS-33 vs 12LS-38 and 12LS-45: which one to choose?

How the 12LS-33 compares with Q-Battery batteries of similar size and capacity:

ModelCapacityDimensions (mm)Weight
Q-Battery 12LS-33 (this one)35 Ah195 × 130 × 15910.6 kg
Q-Battery 12LS-3838 Ah197 × 165 × 17013.2 kg
Q-Battery 12LS-4545 Ah197 × 165 × 17014.5 kg
  • Q-Battery 12LS-38: 3 Ah more, a different case (197 × 165 × 170 mm).
  • Q-Battery 12LS-45: 10 Ah more, a different case (197 × 165 × 170 mm).

Equivalents and alternatives to the Q-Battery 12LS-33

No other reference in the catalogue fully matches the dimensions and polarity of the 12LS-33; you will find the closest ones among our uPS batteries.

Q-Battery 12LS-33 codes and part numbers

Look for any of these 12LS-33 codes on your current battery or in the manufacturer's catalogue:

Commercial reference12LS-33
Terminal typeF11 (M6)
Not to be confused withQ-Battery 12LS-3.4 (3.4 Ah), Q-Battery 12LS-38 (38 Ah)

What to look at before buying the 12LS-33

  • Capacity of the 12LS-33: 35 Ah; the same as your current battery or slightly more is fine.
  • Length, width and height of the 12LS-33: 195 × 130 × 159 mm.

Frequently asked questions about the Q-Battery 12LS-33

Q-Battery 12LS-33 or 12LS-38?

Compared with the 12LS-33, the Q-Battery 12LS-38 has 3 Ah more. With 38 Ah, the 12LS-38 runs longer between charges than the 12LS-33 (35 Ah). Mind the space: the 12LS-38 measures 197 × 165 × 170 mm.

How much does the Q-Battery 12LS-33 weigh?

The 12LS-33 weighs 10.6 kg. For reference, the Q-Battery 12LS-38 (38 Ah) weighs 13.2 kg.

Which charger does the Q-Battery 12LS-33 need?

A charger with an AGM mode that limits voltage to about 14.4-14.7 V. Never an old unregulated charger: overcharging dries out an AGM beyond repair.

Other options if you are unsure about the 12LS-33

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