Solar PV battery options

There's no problem keeping your existing batteries and adding some self built or custom battery to it. In fact I have talked several people through doing just that in the last few months. A major benefit is that very likely they don't have to make any changes to their current setup, not even any changes in the settings, and can just parallel the new battery in

The new battery "piggy backs" onto the existing system, keep all settings, keep all comms as is. It simply adds capacity

@insular1 look at selling via the Irish Solar FB group. Should be plenty of takers in there I would have thought

No according to my tracking it is in Cologne Germay so no update

Very decent prices. Unfortunately they have the **** Seplos BMS. They know themselves they are crap as they now provide a JK balancer as well 😂

They must have some contractual deal with Seplos or this whole venture is a joint venture with Seplos or something. It would cost less in parts to just have a JK BMS rather than a Seplos BMS + JK balancer

I guess you could just rip out the Seplos BMS and install a JK BMS yourself, but that defeats the purpose of the prebuilt kit and you might as well build your own

Fogstar 16.1 kwh Battery £1399 delivered up north .

https://www.fogstar.co.uk/products/fogstar-energy-seplos-48v-16-1kwh-solar-battery?selling_plan=711643169145&variant=55202924724601

Get it sent here and then pick it up ! Happy Days

https://www.borderparcelmotel.com/

FYI: in one photo they show flexible busbars for main connections and in another what look like very thin doubled-up wires.

Same basically but longer from Google Gemini.

TLDR:More or less saying they're probably ok for small purchases, but be very weary if using them for LiFePO4 cells

Based on user reports from solar enthusiast communities and available data, here is a detailed breakdown of the safety and reputation of deligreencs.com (Changsha Deligreen Power Co., Ltd.).

The Bottom Line: Proceed with Caution

Deligreen is a legitimate company, not a fake "scam" site that will take your money and disappear. However, they have a mixed reputation in the DIY solar community. While they are a real manufacturer and distributor, many users report receiving products that do not match the description (e.g., "new" batteries that arrive used or bulging) and poor customer service when things go wrong.

Is it Safe?

• Financial Safety:
  • Direct Website (deligreencs.com): Purchasing directly from their website is riskier than using a platform. If a dispute arises, you have less leverage than you would on a marketplace.
  • Recommendation: If you decide to buy from them, it is safer to use their Alibaba or AliExpress storefronts. These platforms offer "Trade Assurance" or buyer protection policies that can help you get a refund if the product is defective or never arrives. Always pay with a Credit Card or PayPal so you can dispute the charge if necessary.
• Product Safety (Batteries):
  • Quality Control Issues: There are multiple reports of users buying "Grade A" (top tier) battery cells and receiving cells that are swollen, used, or have scratched-off QR codes (indicating they are factory rejects).
  • Safety Hazard: Using damaged or swollen lithium batteries can be a fire risk. If you are building a large battery bank for your home, "factory reject" cells are generally not considered safe or reliable for long-term use.

Is it Reputable?

• Community Feedback: On platforms like the DIY Solar Power Forum, Deligreen is frequently discussed. While some users have had success with simple accessories (like active balancers), there are significant threads warning others about "bait and switch" tactics regarding battery cells.
• Customer Service: Users often report that the company is responsive until there is a problem. Once a refund or return is requested for a defective product, communication can become difficult, or they may ask you to pay expensive return shipping fees to China.
• Marketing Claims: Be skeptical of their claims of "Brand New Grade A" cells. In the raw battery cell market, true Grade A cells are hard to source for consumers; what is often sold are "Grade B" or reputable rejects that function but aren't perfect.

Verdict & Alternatives

• Good for: Small accessories like active balancers or BMS units (Battery Management Systems) if the price is right and you can wait for shipping.
• Risky for: Expensive LiFePO4 battery cells. The risk of receiving sub-par cells is high.

Better Alternatives for Batteries:If you are looking for reliable LiFePO4 cells, the community generally recommends vendors with a verified track record of honesty, such as:

• Docan Power (often has local warehouses in US/EU)
• EVE (official distributors)
• NKON (highly reputable for European buyers)
• 18650BatteryStore or Liion Wholesale (for US-based stock and support)

If you do buy from Deligreen, video record yourself opening the package and testing the voltage/capacity immediately. You will need this evidence if you have to file a dispute.

I did the tracking says the consignment is in DHL Ireland may have it today. I paid with Paypal so hopefully if a problem I will be ok.

AliBaba is always cheapest. Cut out the middle man. But if your head is melted from gently surfing AliExpress, you will probably want to avoid negotiating 24/7 with Chinese representatives, with dodgy western names, who don't have the best English, from 30 different factories, in a very different time zone 😂