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APC UPS — Replacing RBC43 Batteries in a SUA3000RM2U UPS

So it finally happened. The Batteries in my APC SUA3000RM2U finally went bad. I’ve had them for over 5 years so I am happy with there life. I’ve had to replace UPS Battery Cartridges and Packs before when working as a Data Center consultant. It is usually a simple and straight forward task. I would RMA the Battery Cartridge or Pack, if it’s under warranty, and then the manufacturer would send me back a new Battery Cartridge or Pack already filled with new batteries. Hot swap it with the old one and you are done.

However, this time it was my home unit and I don’t have warranty coverage or the extended one(usually purchased by an enterprise). So I went online looking for a Battery Cartridge replacement, $300-400!!!, o my! So I decided to try and replace the batteries themselves rather than the entire Battery Cartridge. I was able to find a pack of 8 batteries for around $83 with free expedite shipping. The following steps were what I did to replace each APC RBC43 battery inside the battery cartridge.

1. Tools needed, New Batteries, Sharpie, Phillips Screwdriver, Utility knife(was in picture for cutting the new box of batteries open only, haha).

January 17, 2016 by jim Uncategorized 2

OpenWRT — Multiple Access Points With 802.1Q (part2)

Welcome back!

In the last part, part 1, we configured our OpenWRT device, got it to emit two(2) Access Point SSIDs (insecureWiFi & secureWiFi), created two(2) VLANs to separate traffic frames, and created a trunk to our PoweConnect switch! Wow!
For this part, part 2, we will be creating another VLAN Trunk from our Dell PowerConnect switch to our Linux router, designing and configuring some Firewall rules.
Continue reading…

April 16, 2013 by jim Uncategorized 4

OpenWRT — Multiple Access Points With 802.1Q (part1)

I set out on this home project with the intent of providing wireless internet to friends and family when visiting. I wanted to provide internet without allowing any malicious clients from consuming all my bandwidth and/or crippling my internal home network. There are many Wireless Access Points(WAP) that are capable of broadcasting multiple SSIDs. Cisco makes a few from their Aironet series, however they seem to be pretty expensive. I settled with a Netgear WNDR3700 after reading a few posts on hardforum.com that had success running OpenWRT.

OpenWRT is an third-party firmware designed for consumer based Access Points, such as Netgear, Linksys, Dlink, etc. OpenWRT adds many additional features, including the two features I needed. Support for 802.1Q trunking and gives the ability to run multiple SSID wireless signals.

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April 16, 2013 by jim Uncategorized 1

Linux — SSH Key Based Authentication

There are many articles and tutorials out there on how to configure SSH to use public key authentication. I wanted to share my findings on the subject and identify some interesting connections I made when setting it up myself. The following instructions will show you how to setup SSH key based authentication, using Ubuntu 12.04, on a local and remote machines.

September 30, 2012 by jim Uncategorized 0

Tools needed, New Batteries, Sharpie, Phillips Screwdriver, Utility knife(was in picture for cutting the new box of batteries open only, haha).

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