Siemens S5-90U replacement battery

BatteryGuy Price

BatteryGuy 3 Volt 950 replacement battery for Siemens S5-90U.

  • Only $12.5.
  • Next day Nationwide delivery available.

It meets or exceeds the Siemens S5-90U PLC specifications defined by the Original Equipment Manufacturer but at a much lower price.

Note this product can also replace:

  • Siemens S5 90U
  • Siemens S590U

(This is one Battery – Please verify quantity needed for your application before ordering)

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Product Q&A

Your Question : Siemens S5-90U replacement battery

Can this item be delivered to me tomorrow? 336 North Royal, Jackson, TN 38301

By Brian Arnold
on 19 April, 2022
  • Unfortunately, lithium cannot go in the air due to federal shipping regulations/restrictions. It can only be shipped via a ground method. We ship from GA.
    on 20 April, 2022

Product Features

Maintenance Free

Maintenance Free

BatteryGuy Lithium Batteries do not require any maintenance while in use. Electrolyte levels are calibrated during factory production.

Puncture Resistant Case

Puncture Resistant Case

The casing of this Lithium battery has been designed to protect the internal components from impacts with sharp objects for extra durability in transport and use.

Corrosion Resistance

Corrosion Resistance

Both the terminals and casing are rust resistant so you won't experience loss of power because of faulty connections even in humid conditions.

High Energy Density

High Energy Density

The way we make our volt Lithium Batteries means you get an excellent energy per pound of weight ratio.

Optimized Conductivity

Optimized Conductivity

The materials we use inside and out have been specially selected for their optimal electrical conductivity so energy loss inside the battery is minimized.

Impact Resistant

Impact Resistant

All our Lithium Batteries are designed to survive impacts making them tough in transport and tough in use.

Alerts and Warnings

Our products are not affiliated with or authorized by Siemens

If your Siemens S5-90U comes from a device which runs on multiple batteries, make sure to replace all of them at the same time or you will dramatically reduce the lifespan of the new batteries by mixing them with older batteries.

You have to install your replacement Siemens S5-90U batteries in the same original configuration they came out and are required to use your existing hardware and cables to reconnect the replacement batteries when applicable.

It is your responsibility to verify the battery or batteries being ordered match the Siemens S5-90U specifications prior to placing your order. Please check your:

  • existing battery dimensions (Length x Width x Height)
  • quantity needed to replace all batteries
  • voltage and amp hour requirements

Manufacturers may change requirements without notice. BatteryGuy is not responsible for incorrect orders - if you need help, please contact us.


This product contains Carbon Black, a chemical known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to

Videos and Films

An explainer video on how lithium based batteries are made.