The Alternative Energy Thread - Generators, Solar, UPS, Wind

[mrdeejay]

Are there any stackable lithium batteries available in Pakistan? Like these ones: https://dyness.com/tower-pro-high-voltage-storage-battery-for-household-use

[mgalaxy3]

Asking for someone
What’s the best way to add a hybrid inverter+lithium batteries to on grid setup?

Does the normal household supply feed into the hybrid inverter, which then charges the lithium batteries from household supply?

And then at the end of the month the net units are generated in bill?

Or
Does hybrid inverter get connected to its own panels and own circuit or something?

Which is hassle free and safe?

Cc @AkbarGr8 @mrdeejay @sardarg @umans @saqibhassan95

[mgalaxy3]

I think most batteries are stackable (at least LD51 from Solax is) but will not resemble the look of the tower battery you linked.

[AkbarGr8]

Please get more details with regards to the ongrid inverter. Brand / kw / solar panel details / number of strings used.

Ideally if the ongrid inverter has 2 strings, 1 can be shifted to the hybrid inverter so that it can charge the batteries and partially support the house as well (can connect load which you'd like to power during an outage).

[AkbarGr8]

Personally a fan of Nitrox 10KW SP or Nitrox 8KW 3 phase (net metering compliant). Pylontech UF5000 series batteries OR Dyness 5.0C batteries.

[mgalaxy3]

Thanks! Will relay the info.

Btw Solax LD51 has completely changed my mind. It’s going great working flawlessly and comes at a very good price.

In the age of dropping lifepo4 prices, I’m starting to boycott batteries still available at anything over 200k for 5.12kwh 6000+ cycles. Gotta bring the dropping China pricing benefits to Pakistan.

[AkbarGr8]

I believe the solax battery is made / assembled in PK. Not sure of the BMS type but I believe it does work properly.

[mgalaxy3]

Yes and yes. Solax opened a plant in Pak and this LD51 is now also available in some other countries from what I’m seeing. Not sure if they are exporting them from Pakistan or directly sending from China. They already have good presence in the UK.

Working flawlessly with nitrox as well as Solax own inverters.

[mgalaxy3]

More on their factory/manufacturing plant that they opened in Pakistan (hate that they're calling it Li-Ion when it is LifePo4 ):

I'm expecting good service/support from them as Solax are localizing their products.

[AkbarGr8]

Hoped to catch a glimpse of their assembly facility but no luck there lol

[mrdeejay]

Anyone heard of this company Livoltek? I'm Interested in their HV battery system https://solarshop.livoltek.pk/product/lithium-battery-high-voltage-10kwh/

[sardarg]

battery back up can be calculated using basic formula:

a = battery voltage
b = battery amps
c = load in watts
* a x b / c = d (d = number of hours your battery will survive at designated load)

if a = 48 | b = 290 Ah | c= 5000 watts

48 x 290 = 13920 / 5000 = 2.78 hours battery backup.

Reducing load over battery will Increase the back-up time
--
if there is any other formula to calculate backup time please share.

[pwuser16800059408]

Where to get the junction box repair work or replacement of demaged solar wire related to 165-180 watts solar pannels?

[sardarg]

sir @pwuser16800059408 if you please share the pictures of damage and mention your location some of PW members will guide you for sure.

[mrdeejay]

I need recommendations for good High-Voltage lithium batteries that could be wall-mounted?

[mgalaxy3]

I would suggest to only go for major brands that are operating officially within Pakistan so that you get some service and warranty support. Preferably with presence in rest of the world too.

I know only two battery+inverter manufacturers with official setups..

Deye through Inverex
Solax

See if any of them are offering HV batteries. You can call their helplines to confirm.

Rest are just people importing batteries and claiming warranty/support while they have an actual warranty center in only one city. I like dyness but if any issue arises you have to send battery to Lahore (good luck with that!!!). I think Pylontech is also being sold from some local company only in Karachi but not 100% sure if they offer support in other cities - @AkbarGr8 would know.

[AkbarGr8]

Based on personal experience, warranty support / quality of service depends on the personal connection you have with your solar installer.

Citing my own example, my installer provided fantastic service initially but got rich super quick thanks to the boom in solar. Now his philosophy his to increase the number of projects he's working on simultaneously, where customer support / service has taken a back seat.

God forbid you need some hardware replaced under warranty, you're doomed.

I've now become half an installer myself, bypassing the BS and poor service being offered by businesses in general.

The prevalent fake stuff available in the market is astonishing - God have mercy.

Sorry for the rant but I hope this helped.

[sardarg]

but got rich super quick

such mindset is not Business Norm. Customer Service & Support are the key elements to spread your business, wisely to last long. There are no short cuts to success, which requires dedication and hardwork, success drags the prosperity along.

Buy the product which has after sales support / service centre within your city.

[mubeentahircheema]

asalam o alikum every one
need to buy new ups, can you guys guide me to get a 12v pure sine wave ups
as I am using most of the inverter appliances like 30w inverter fans and LED TV's and laptops etc.
planning to buy pure sine wave UPS
but mostly ups available in local market seems deceiving or priced extremely high due to their solar input thing
already had a 12kw on grid setup, just need a small 12v 800w or 1000w UPS
and any review for "simtek Pure Sine Wave UPS 1500VA - 800 watts 12v DC" costing around, 43000/PKR
to use with deep cycle tall tubular battery