Please read the description carefully.

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7s PCB boards are now available loaded up with UNUSED Boston Sonata 5300 cells, using my new "no holder" design. Each board becomes a 24v (7s) Battery module that can be used on its own or can be part of a modular multi-module battery system. Combine multiple modules to make any configuration you need. Capable of 1.5C (2C burst). To use for high performance, consider adding a BMS with temperature sensors.

MODULE SPECS
Module Power Rating:  5A at 1.5C continuous (2C burst)
Module Capacity:  137Wh
Dimensions:  3.7 x 5.3 x 7 in

CELL SPECS
Capacity:  5300mAh
Current:  13A continuous
Power:  19Wh
Dimensions:  Custom 18650, 19 x 37 x 65mm

Use as an Expansion Battery:

This battery pack can serve as an expansion battery for many popular power stations. It may be possible to connect multiple batteries in series to increase the charging speed (Volts), or connect multiple in parallel to increase capacity (AmpHours) and current (Amps), see your device specs for max limits. Plz double-check your power station's PV/Solar input specifications to make sure this battery will be compatible. Use with:

• EcoFlow Delta Max 2000 (Solar Charging Input 800W Max, 11-100V, 13A). May require an XT90 connector adapter.
• EcoFlow Delta Max 1600 (Solar Charging Input 800W Max, 11-100V, 13A). May require an XT90 connector adapter.
• EcoFlow Delta Pro (Solar Charging Input 1600W Max, 11-150V, 15A Max). May require an XT90 connector adapter.
• EcoFlow Delta Mini (Solar Charge Input 300W 11–75V DC 10A max). May require an XT60 connector adapter.
• Bluetti AC300 (Solar Input 2,400W Max., VOC 12-150VDC, 12A). May require an XT60 connector adapter.
• Bluetti AC200 Max (Solar Input 900W Max., VOC 10-145VDC, 15A). May require an XT60 connector adapter.
• Bluetti EB240 (PV Max Input Power MAX 500W/10A, OCV 16V~68V /MAX10A). May require an XT60 connector adapter.
• EcoFlow River (Solar Charge Input 200W 10-25V DC 12A Max). May require an XT60 connector adapter.
• EcoFlow River Max (Solar Charge Input 200W 10-25V DC 12A Max). May require an XT60 connector adapter.
• EcoFlow River Pro (Solar Charge Input 200W 10-25V DC 12A Max). May require an XT60 connector adapter.
• Bluetti EB70 (Solar Input 200W Max., VOC 12-28V, 8A). May require an XT60 connector adapter.
• Bluetti EB55 (Solar Input 200W Max., VOC 12-28V, 8A). May require an XT60 connector adapter.
• Bluetti AC50S (12V/24V AC-Solar-Car-Generator Recharge). May require an XT60 connector adapter.
• Similar spec portable power stations. You are responsible for double-checking to make sure this battery is compatible with your power station. When combining batteries, you are ultimately responsible for making sure your configuration (series or parallel) is compatible.

Charging

We recommend fully charging this pack as soon as you receive it. Charger not included.

VIDEO ABOUT BOSTON SONATA MODULES:

VIDEO ABOUT BOSTON SONATA CELLS: 

USE AS A BLUETTI EXPANSION PACK: 

DIAGRAMS

These battery packs are very modular. Here's one way to make 24v using a single or multiple modules assembled in a battery pack system using a Daly BMS module:

Here is one way to make 48v using a 2 or multiple of 2 modules assembled in a battery pack system using Daly BMS modules:

Here's a 48v system using an external 14s BMS (Battery Management System):

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Note that these are reclaimed packs, so the actual cell voltage you receive may be lower than the label shows. These items are sold for DIY and Second Life purposes. Listings that are “untested” as sold as-is and cannot be returned, exchanged or refunded. We make no guarantees that all cells will be usable. Even when sold as “new”, “NOS”, or “like-new”, they may be in less than perfect condition. Buyer is responsible for proper cell recycling/disposal. Sold as-is. No refunds.

If you buy a product from us and then realize you don't have, or don't want to acquire, the tool(s) or information needed to make our product(s) work for your specific build, this does not constitute valid grounds for replacements, exchanges or refunds. You are responsible for doing your due diligence before making any purchases.

NEW YORK residents:
On 3/2/2023 New York passed a law banning the sale of lithium-ion batteries for mobility devices that are not certified to UL 2271, and the assembly and reconditioning with cells removed from used batteries for commercial sale within the state of New York (more details here). New York residents, you are solely responsible for researching, understanding and complying with all pertinent regulatory rules, laws, statutes, and NY safety standards.

Safety is important to us, we don't want people to get hurt or property to get damaged, especially when working with DIY and/or second-life lithium-ion batteries. All batteries everywhere are inherently dangerous, so we urge all who work with DIY and/or second-life lithium-ion batteries to take safety seriously so as to avoid causing any harm to self, others or property.