Those connectors are latching ones, you just pull down on the plastic cover and they unlock, no screwdriver needed. You might find you will need new connectors if the battery units have weeped acid through the terminal seal, and this will corrode the connector to a blue green blob. Replace the whole link with a new one, the cable corrodes as well. Use regular crimp connections with 4mm wire ( yellow body ones) and cover the terminal with a short piece of clear heatshrink for isolation.
I always thought APC charged far too much for their replacement battery cartridges. I saved about £150 by doing this with a SmartUPS rack mount unit I salvaged from work. I only used relatively cheap FIAMM batteries because I didn't know if the UPS worked or if I would be able to get it going. As it happens it did at the time but has since developed a fault where it detects a load when none is connected sometimes putting it into an overload condition.
Smashing tutorial :-)) I do like that method for ups, as its h.v then i can see the batterys being switched onto the input of a switchmode circuit to provide 230-240vac, i would imagine the charger is a low current trickle system, sounds reliable. Stepping up say 24vdc to mains has got to be more stressfull on an inverter. Dam cheap repair :-))
Is the 12 quid per battery price only if you buy them 32 of them at a time? I've considered recycling an old UPS for ages but the batteries always work out more expensive than a new unit when bought one or two at a time.
AintBigAintClever Rapid electronics do Yuasa NP7-12 batteries for £12.90 for 1+, £11.96 each for 5+ and £11.17 each if you're buying 25 or more. They'll probably give you a bigger discount if you're buying 100+ and you call them first. I think Maplin charge about £40 each for these. XD
This is part of the reason why I like the Symmetra PX series. This series is so easy to maintenance and work on compared to something like the Liebert 300 series. Hands down it's a great UPS system. Thanks for sharing this.. I am curious if you have replaced any of these with Lithium Ion equivalents? This might be cheaper than buying an extra battery cabinet for more run time, and they should have a longer life span
Anyone know if you can get just the resistor card? My UPS took a lightning strike and fried out one of the cards. I don't want to buy a whole battery pack just to get the card. I don't need the spring loaded connector...just the card.
CSB batteries seem to be in the majority of APC's battery packs, at least in the UK and in my experience. Don't know whether they're the best, but I doubt APC would use a poor quality brand as they've got a reputation to live up to.
I think I've got a pair of Lucas in my UPS at home. I've definitely got Lucas in the intruder alarm, in a jump starter and in a backpack. As far as I can tell Lucas and Numax VRLA batteries share the same internals. When replacing UPS batteries at work we tend to use CSB.
@@AintBigAintClever I think Lucas may have replaced the Numax VRLA line after being acquired by a company called manbat, I'm guessing they just import them from who knows where and has the factory brand them first. Lots of cheap garbage batteries still around just like in the video even all these years later.
Next time you need to do this, Replace those 7.2AH batteries with 9AH ones that are the same size. Should gain you an extra 20-25% energy Capacity. APC actually use the 9AH batteries in some of the newer units. obviously you cant tell the unit it has 9AH batteries in it, but if you do some runtime calibrations, it should learn what the new runtime is.
This is very nice but you didn't make any mention of the compensating resisters that are in each module. Each module has compensating resisters that are different in each module depending on what manufacturers batteries are installed. If a different manufacturer is used when you replace it, the UPS's diagnostics can not properly determine the charge level and the batts cant be matched with any other battery module. As an engineer at APC I can state this as fact.
Larry Tetro Would that be the resistors shown at 8:15? I was wondering what those were for, I thought they'd be to do with the thermistor. Good to know.
Those connectors are latching ones, you just pull down on the plastic cover and they unlock, no screwdriver needed. You might find you will need new connectors if the battery units have weeped acid through the terminal seal, and this will corrode the connector to a blue green blob. Replace the whole link with a new one, the cable corrodes as well. Use regular crimp connections with 4mm wire ( yellow body ones) and cover the terminal with a short piece of clear heatshrink for isolation.
Wow, I thought they looked a bit complex! I'll have a closer look at those connectors.
I always thought APC charged far too much for their replacement battery cartridges.
I saved about £150 by doing this with a SmartUPS rack mount unit I salvaged from work.
I only used relatively cheap FIAMM batteries because I didn't know if the UPS worked or if I would be able to get it going.
As it happens it did at the time but has since developed a fault where it detects a load when none is connected sometimes putting it into an overload condition.
Smashing tutorial :-))
I do like that method for ups, as its h.v then i can see the batterys being switched onto the input of a switchmode circuit to provide 230-240vac, i would imagine the charger is a low current trickle system, sounds reliable.
Stepping up say 24vdc to mains has got to be more stressfull on an inverter.
Dam cheap repair :-))
Is the 12 quid per battery price only if you buy them 32 of them at a time? I've considered recycling an old UPS for ages but the batteries always work out more expensive than a new unit when bought one or two at a time.
Shop around, the supplier I found does them for £13.99 each singly, £13.49 for 2 or more, £12.99 for 11 or more or £12.49 for 25 or more.
AintBigAintClever
Rapid electronics do Yuasa NP7-12 batteries for £12.90 for 1+, £11.96 each for 5+ and £11.17 each if you're buying 25 or more. They'll probably give you a bigger discount if you're buying 100+ and you call them first. I think Maplin charge about £40 each for these. XD
This is part of the reason why I like the Symmetra PX series. This series is so easy to maintenance and work on compared to something like the Liebert 300 series. Hands down it's a great UPS system.
Thanks for sharing this.. I am curious if you have replaced any of these with Lithium Ion equivalents? This might be cheaper than buying an extra battery cabinet for more run time, and they should have a longer life span
Does this work for the Symmetra LX modules? I was told there is a microchip in each battery module to make sure you cannot do this.
Anyone know if you can get just the resistor card? My UPS took a lightning strike and fried out one of the cards. I don't want to buy a whole battery pack just to get the card. I don't need the spring loaded connector...just the card.
Great instructional video.
Do CSB make the best SLA batteries in your opinion? I'm about to replace a couple in a much smaller UPS and have no idea on brands of these things!
CSB batteries seem to be in the majority of APC's battery packs, at least in the UK and in my experience. Don't know whether they're the best, but I doubt APC would use a poor quality brand as they've got a reputation to live up to.
What do you reckon to the different VRLA brands out there, any experience with the Lucas types?
I think I've got a pair of Lucas in my UPS at home. I've definitely got Lucas in the intruder alarm, in a jump starter and in a backpack.
As far as I can tell Lucas and Numax VRLA batteries share the same internals.
When replacing UPS batteries at work we tend to use CSB.
@@AintBigAintClever I think Lucas may have replaced the Numax VRLA line after being acquired by a company called manbat, I'm guessing they just import them from who knows where and has the factory brand them first. Lots of cheap garbage batteries still around just like in the video even all these years later.
Good day... is this UPS is hot swapable when replacing battery?
Yes. No need to shut down nor put in bypass when swapping batteries.
Next time you need to do this, Replace those 7.2AH batteries with 9AH ones that are the same size. Should gain you an extra 20-25% energy Capacity.
APC actually use the 9AH batteries in some of the newer units.
obviously you cant tell the unit it has 9AH batteries in it, but if you do some runtime calibrations, it should learn what the new runtime is.
384 volts ?
I converted mine to12v yo these battery's 9Ah x 8=96AH I'm not finishing the battery power
thank you so much man, like the magic
This is very nice but you didn't make any mention of the compensating resisters that are in each module. Each module has compensating resisters that are different in each module depending on what manufacturers batteries are installed. If a different manufacturer is used when you replace it, the UPS's diagnostics can not properly determine the charge level and the batts cant be matched with any other battery module. As an engineer at APC I can state this as fact.
Larry Tetro Would that be the resistors shown at 8:15? I was wondering what those were for, I thought they'd be to do with the thermistor. Good to know.
8 x 12 volt mate
+ronniezzzz 4 x 8 x 12 volts. The slabs of 8 are connected in series to make a 384 volt string.
lol chuck it on the floor why dont u