12 Volt 8AH Deep Cycle Rechargeable Lithium ion Battery Perfect for Replace UPS System Fish Finder Battery Maintenance-Free Built in BMS 4000-7000 Cyc

Q: Does the BMS automatically prevent low temperature charging?

A: Dear customers, thank you for your question. Our battery working environment is as follows: Operating temperature range Charge: 32℉--113℉ … see more Dear customers, thank you for your question. Our battery working environment is as follows: Operating temperature range Charge: 32℉--113℉ Discharge: -4℉--140℉ Storage temperature: 10℉-122℉ Charging state: low temperature cut-off is 32 ° F, high temperature cut-off is 113 ° F Discharge state: low temperature cut-off is - 4 ° F, high temperature cut-off is 140 ° F Thanks. see less

Q: Can these serve as replacement for 1500va bx1500m apc ups?

A: A few others have confirmed that it will work from a physical size perspective. One thing that I want to point out is a discharge current ratings. The 8 amp hour battery, for instance, is only rated at 8 amps continuous. At 12V, that's only about 100W per battery in round numbers. In the case of the 1500va ups that was… see more A few others have confirmed that it will work from a physical size perspective. One thing that I want to point out is a discharge current ratings. The 8 amp hour battery, for instance, is only rated at 8 amps continuous. At 12V, that's only about 100W per battery in round numbers. In the case of the 1500va ups that was asked about, that would limit that unit to only 200W continuous when running on battery power. I don't have any insight on whether the BMS will enforce that current limit or if it will output more at the expense of longevity, but limiting a 1500W unit to around 200w doesn't seem like a good investment. There are other batteries out there with the same chemistry but with different amp hour capacity and brand which have significantly more continuous current ratings. Not enough to get the ups up to its original wattage rating but much closer. Of course those batteries are much more expensive, so there's that to consider. see less

Q: Can these batteries be recharged from my marine alternator?

A: From what I've read, chargers should be designed specifically for LiFePo4 batteries, that is don't use a lead-acid charger. If your existing marine batteries are LA or SLA or even AGM, maybe figure out the existing charging circuit on your boat is designed to charge LiFePo4 effectively. I got this battery for a trave… see more From what I've read, chargers should be designed specifically for LiFePo4 batteries, that is don't use a lead-acid charger. If your existing marine batteries are LA or SLA or even AGM, maybe figure out the existing charging circuit on your boat is designed to charge LiFePo4 effectively. I got this battery for a travel trailer and also purchased a specific LiFePo4 charger instead of using LA chargers I already own, but of course the trailer does not have an alternator (or a generator) anyway. I do, however, avoid "trickle charging" from the tow vehicle by disconnecting battery using kill switch while towing, a situation perhaps more similar to your marine application. Could be that's overkill, but at $900 I'm not taking chances. see less

Q: Does 100 ah have low temperature charging cut off

A: Thank you for your question. At present, all models of batteries sold do not have low-temperature cut-off function. It can only be cut off under the conditions of low voltage, high voltage, high temperature and overcurrent. Thank you.