The Grid Sentinel | 12V-24V LiFePO4 Deep-Cycle Battery (100Ah-300Ah, Built-in BMS)

Economisez 20%
EastSupplier PlatformSKU: 1005009866444647-12V 300AH-Poland

Color: 12V 300AH
Prix:
$1,067.80 $1,334.75

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Stock:
32 en stock, prêts à être livrés

Description

Power is not a commodity. It is a promise kept at three in the morning.

Every off-grid system has a moment of truth: the night the grid drops, the morning the inverter wakes to an empty bank, the season the sun refuses to show up on schedule. That is where the Grid Sentinel earns its name. Built on prismatic lithium iron phosphate cells, it delivers 12V or 24V architecture in a single modular pack, storing between 1280Wh and 3840Wh of usable energy. This is not a battery you replace each season; it is infrastructure you install once and forget for the next decade.

The chemistry alone separates it from everything else on the shelf. LiFePO4 delivers more than 6000 charge cycles at 100% depth of discharge, a service life five times longer than lead-acid, at roughly one-third the weight. The built-in Battery Management System watches every cell continuously: balancing voltage, cutting the circuit on over-current or over-temperature, and keeping the pack alive through discharge temperatures down to -20°C. For an RV, a solar shed, a sailboat, or a backup room that must not fail, the math is simple. Lead-acid is a compromise. This is a decision.

This is not a battery. It is a reserve of certainty that quietly waits for the moment you need it.

Key Features

  • ✦ 6000+ charge cycles at 0.5C, 100% depth of discharge - a working life of 5 to 10 years
  • ✦ Prismatic LiFePO4 cells - thermally stable, non-combustible, no acid, no fumes
  • ✦ Only 30% of the weight of an equivalent lead-acid bank
  • ✦ Built-in BMS: cell balancing, over-voltage, under-voltage, over-current and temperature protection
  • ✦ Modular expansion - up to 4 in series or 4 in parallel (4S4P) for 24V/48V systems up to 20.48kWh
  • ✦ Discharges down to -20°C - better low-temperature behavior than lead-acid
  • ✦ 60-month warranty with ten years of replacement support on accessories

Technical Specifications

  • Chemistry:Lithium Iron Phosphate (LiFePO4)
  • Nominal Voltage:12.8V (12V models) / 25.6V (24V model)
  • Capacity:100Ah / 300Ah (12V) - 100Ah (24V)
  • Stored Energy:1280Wh / 2560Wh / 3840Wh depending on model
  • Cycle Life:>6000 cycles @ 0.5C, 100% DoD, 25°C
  • Max Discharge Current:100A / 200A (model dependent)
  • Max Charge Current:50A / 150A (model dependent)
  • Operating Temperature:Discharge -20°C to +55°C; charge 0°C to +55°C
  • Dimensions:260x155x207mm (12V100Ah) / 522x268x222mm (12V300Ah) / 510x167x240mm (24V100Ah)
  • Weight:9.5kg / 19kg / 25.6kg (model dependent)
  • Connection:Multiple units in series or parallel supported
  • Warranty:60 months

Where it lives: The Grid Sentinel is built for the places energy has to be trusted - motorhomes and campervans, solar cabin systems, marine electrical banks, caravan off-grid kits, and emergency backup rooms. Because the pack accepts parallel expansion, a single 100Ah core can grow into a full 400Ah bank as your system demands more; because it accepts series wiring, the same cells can step up to 24V or 48V architecture without changing chemistry. Four units in 4S4P configuration deliver 51.2V at 400Ah - a complete 20.48kWh home storage foundation.

Frequently Asked Questions

Q: How long will this battery actually last?

Rated for more than 6000 charge cycles at 0.5C and 100% depth of discharge. In daily-use solar or RV applications that translates to roughly 5-10 years of service - several times the lifespan of a lead-acid bank.

Q: Can I replace my lead-acid battery with this?

Yes. The 12V models are direct drop-in replacements for 12V lead-acid batteries with the same nominal voltage range. You gain more usable capacity (100% DoD vs 40-50%), lose about 70% of the weight, and remove acid venting entirely.

Q: Can I connect multiple batteries?

Yes - up to 4 in series or 4 in parallel. Before wiring, fully charge each unit separately, then connect in parallel for 1-2 hours to equalize voltage. Use adequately thick connecting wire for series configurations.

Q: Does it work in cold weather?

Yes. Discharge is rated down to -20°C, which is better than most lead-acid chemistries. Charging is limited to 0°C and above, a standard safety measure for LiFePO4.

Q: What charger should I use?

Use a LiFePO4-compatible charger: 14.4-14.6V at 20-50A for the 12V 100Ah model, 14.6V at 50-150A for the 300Ah model, and 29.2V at 20-50A for the 24V 100Ah model.

Q: What is covered by the warranty?

The pack carries a 60-month warranty, with replacement support for accessories extending to ten years.

Q: Is this battery safe to install indoors?

Yes. LiFePO4 chemistry is inherently stable - no acid, no hydrogen off-gassing, and no thermal runaway risk under normal operation. It can be mounted in living areas, engine bays, and enclosed compartments where lead-acid is not permitted.

Q: What is the difference between the 12V and 24V models?

The 12V models (100Ah/300Ah) suit standard 12V RV, marine, and solar systems; the 24V 100Ah model matches 24V inverter and camper architectures. Choose by your system voltage - the chemistry and BMS protection are identical across the family.

Customer Reviews

Customer Reviews

Based on 4 reviews
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S
Sofia L.
The weight difference sold me

Lugging lead-acid batteries up a boat ramp is a thing of the past. This 100Ah pack is genuinely light and the cells run cool even under a heavy discharge from the trolling motor. Charging profile is standard LiFePO4, nothing exotic needed.

D
Dmitri K.
Solid build, great parallel expansion

Wired two units in parallel to double capacity - the process was straightforward and they balanced within an hour as described. Only reason for four stars is the terminal covers feel a bit light, but function is flawless. 60-month warranty is a nice safety net.

E
Elena R.
Cold mornings no longer mean dead batteries

We winter in the mountains and my old bank would drop below half charge overnight. This LiFePO4 holds its voltage through freezing nights and the discharge rating down to -20C is real. The included BMS gives me peace of mind I never had with lead-acid.

M
Marcus T.
Replaced my lead-acid bank, half the weight

Swapped two 100Ah lead-acid batteries for one of these and immediately noticed the difference - it weighs about a third as much and the RV tows easier. The BMS keeps everything balanced and the 12.8V output is rock steady. Six thousand cycles should cover a decade of weekend trips.

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